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Left 4 Dead Cheats

Left 4 Dead

Cheat Codes:
Update by: fhnf
Submitted by: RM

Enter the Steam control panel then select the "My Games" tab. Right click "Left 4 Dead" and 
select the "Properties" option. Select the "Set Launch options..." option. Enter -console as
a launch option. Start the game. A console window will appear at the main menu. Type bind c 
toggleconsole then press [Enter] at the console window to allow the console window to also 
appear during game play. Close the console window, then begin game play by selecting the 
"Play Campaign", "Play Versus" or "Play Single Player" options. 
Note: If you are not in single player mode, you must also do the following steps to allow 
cheat codes to be used. Select "Play With Friends". Select the "Create Lobby" option. Select 
either "Campaign Mode" or "Versus Mode". Enter the "Game Settings: Friends-Only Game" menu 
and change "Server Type" to "Local Server". After you game is in progress, press C to display
the console window, then enter one of the following codes to activate the cheat function. 

Code                               Result
sv_lan 0                         - Enable Internet LAN (1)
map [map name]                   - Start LAN server (1)
changelevel [map name]           - Quick change map
noclip                           - No clipping mode
god [0 or 1]                     - Invincibility
give [item name]                 - Spawn indicated item
ent_fire !self setteam 1         - Be spectator
ent_fire !self setteam 2         - Be survivor
ent_fire !self setteam 3         - Be infected
sv_infinite_ammo [0 or 1]        - Unlimited ammunition
openserverbrowser                - Display available servers
z_spawn [NPC name]               - Spawn indicated NPC type
impulse 10                       - All weapons and ammunition
impulse 101                      - Add ammunition to primary weapon
buddha [0 or 1]                  - Receive damage, but will cannot die
give health                      - Full health 
nb_blind 1                       - Infected cannot see you
warp_all_survivors_here          - Teleports all survivors to your position
warp_all_survivors_to_checkpoint - Teleports all survivors to nearest checkpoint
warp_all_survivors_to_finale     - Teleports all survivors to the finale 
warp_to_start_area               - Teleport yourself to the next chapter
z_common_limit [number]          - Set number of normal zombies
z_mega_mob_size [number]         - Set number of panic zombies
Director_force_panic_infinite 1  - Force a panic
director_panic_forever 1         - Panic never stops
z_spawn zombie                   - Spawn single zombie
boom                             - Spawn active pipebomb under you
fire                             - Spawn lit Molotov cocktail under you
z_health [number]                - Set zombie health
z_speed [number]                 - Set zombie speed
director_force_panic             - Force a panic event
thirdpersonshoulder              - Set camera behind the shoulder in third person view
thirdperson_mayamode             - Toggle set fixed camera in third person
thirdperson                      - Set camera in third person view
director_no_mobs [0 or 1]        - Toggle mob rushes
tongue_range [number]            - Set maximum range of Smoker's tongue attack; default is 750
z_witch_burn_time                - Set time before a burning Witch dies from fire
z_witch_damage [number]          - Set amount of damage Witch's attack does 
z_witch_allow_change_victim 1    - Toggle allowing witch to change targets instead (0 or 1)
z_tank_health [number]           - Set maximum health of Tank
z_frustration_lifetime [number]  - Set number of seconds until the player loses control of Tank
director_stop                    - Disable all wanderers, mobs, specials, and Bosses
sb_friendlyfire [0 or 1]         - Toggle if bots can do friendly fire damage.
director_no_human_zombies 1      - Toggle controllable Boss Infected  (0 or 1)
ent_create weapon_[item name]    - Spawn indicated item for NPCs
ent_remove                       - Remove a teammate; repeat for more
kill                             - Suicide
retry                            - Restart game with cheats active; 
                                   allows achievements to be earned with cheats.
quit                             - Quit game
record [filename]                - Start recording game play; 
                                   new file created for each level automatically
playdemo [filename]              - Play recorded game play file
stop                             - Stop recording game play
sb_give [item name]              - Spawn item for bot teammates
z_pounce_damage [number]         - Set amount of damage zombies do to survivors
z_pounce_door_damage [number]    - Set amount of damage for zombies to pounce through doors
tongue_fly_speed [number]        - Set speed of Smoker's tongue to fly
vocalize [phrase]                - Make the player say phrase 

(1) Enable while in "Campaign Lobby" screen.

Item names:
Use one of the following entries with the "give" or "ent_create weapon_" codes. 
For example, use "give pistol" or "ent_create weapon_pistol" as a code. 


NPC names:
Use one of the following entries with the "z_spawn" code. 


Map names for Campaign mode:
Use one of the following entries with the changelevel or map codes. 
Level                                   Code
No Mercy     : The Apartments         - changelevel l4d_hospital01_apartment
No Mercy     : The Subway             - changelevel l4d_hospital02_subway
No Mercy     : The Sewer              - changelevel l4d_hospital03_sewers
No Mercy     : The Hospital           - changelevel l4d_hospital04_interior
No Mercy     : Rooftop Finale         - changelevel l4d_hospital05_rooftop
Death Toll   : The Turnpike           - changelevel l4d_smalltown01_caves
Death Toll   : The Drains             - changelevel l4d_smalltown02_drainage
Death Toll   : The Church             - changelevel l4d_smalltown03_ranchhouse
Death Toll   : The Town               - changelevel l4d_smalltown04_mainstreet
Death Toll   : Boathouse Finale       - changelevel l4d_smalltown05_houseboat
Dead Air     : The Greenhouse         - changelevel l4d_airport01_greenhouse
Dead Air     : The Crane              - changelevel l4d_airport02_offices
Dead Air     : The Construction Site  - changelevel l4d_airport03_garage
Dead Air     : The Terminal           - changelevel l4d_airport04_terminal
Dead Air     : Runway Finale          - changelevel l4d_airport05_runway
Blood Harvest: The Woods              - changelevel l4d_farm01_hilltop
Blood Harvest: The Tunnel             - changelevel l4d_farm02_traintunnel
Blood Harvest: The Bridge             - changelevel l4d_farm03_bridge
Blood Harvest: The Train Station      - changelevel l4d_farm04_barn
Blood Harvest: Farmhouse Finale       - changelevel l4d_farm05_cornfield

Map names for Versus mode:
Use one of the following entries with the changelevel or map codes.
Level                              Code
No Mercy     : The Apartments    - changelevel l4d_vs_hospital01_apartment
No Mercy     : The Subway        - changelevel l4d_vs_hospital02_subway
No Mercy     : The Sewer         - changelevel l4d_vs_hospital03_sewers
No Mercy     : The Hospital      - changelevel l4d_vs_hospital04_interior
No Mercy     : Rooftop Finale    - changelevel l4d_vs_hospital05_rooftop
Blood Harvest: The Woods         - changelevel l4d_vs_farm01_hilltop
Blood Harvest: The Tunnel        - changelevel l4d_vs_farm02_traintunnel
Blood Harvest: The Bridge        - changelevel l4d_vs_farm03_bridge
Blood Harvest: The Train Station - changelevel l4d_vs_farm04_barn
Blood Harvest: Farmhouse Finale  - changelevel l4d_vs_farm05_cornfield

Split-screen mode:
Note: This procedure involves editing a game file; create a backup 
copy of the file before proceeding. Insert an Xbox 360 controller. 
Use a text editor to edit the "360controller.cfg" file in the 
"\left4dead\cfg folder" directory. 
Replace its content with the following.

unbindall  // Prevent mouse/keyboard control when gamepad is in use
           // (to prevent autoaim exploit)
joystick 1
joy_advanced "1" // use advanced joystick options (allows for multiple axes)
joy_name "L4D Xbox360 Joystick Configuration"
joy_advaxisx 3      // x-axis controls GAME_AXIS_SIDE (strafing left and right)
joy_advaxisy 1      // y-axis controls GAME_AXIS_FORWARD (move forward and back)
joy_advaxisz 0     // z-axis is treated like a button
joy_advaxisr 2     // r-axis controls GAME_AXIS_PITCH (look up and down)
joy_advaxisu 4     // u-axis controls GAME_AXIS_YAW (look left and right)
joy_advaxisv 0         // v-axis is unused
joy_forwardsensitivity -1.0  // movement sensitivity
joy_sidesensitivity 1.0
joy_forwardthreshold 0.1    // movement dead zone settings
joy_sidethreshold 0.1
joy_pitchsensitivity 1.0 // look sensitivity
joy_yawsensitivity -1.5
joy_pitchthreshold 0.1      // look dead zone settings
joy_yawthreshold 0.0

joy_variable_frametime 1
joy_autoaimdampenrange 0.85
joy_autoaimdampen 0.5
joy_lowend 0.65
joy_lowmap 0.15
joy_accelscale 3.0
joy_accelmax 4.0
joy_response_move 5
joy_response_look 1
joy_autoaimdampen 0.3
joy_autoaimdampenrange 0.85
joyadvancedupdate // advanced joystick update allows for analog control of move and look

// Alternate control 1
bind "0" "slot10"
bind "1" "slot1"
bind "2" "slot2"
bind "3" "slot3"
bind "4" "slot4"
bind "5" "slot5"
bind "6" "slot6"
bind "7" "slot7"
bind "8" "slot8"
bind "9" "slot9"
bind "a" "+moveleft"
bind "c" "+voicerecord"
bind "d" "+moveright"
bind "e" "+use"
bind "f" "impulse 100"
bind "h" "motd"
bind "m" "chooseteam"
bind "q" "lastinv"
bind "r" "+reload"
bind "s" "+back"
bind "t" "impulse 201"
bind "u" "messagemode2"
bind "w" "+forward"
bind "x" "+mouse_menu QA"
bind "y" "messagemode"
bind "z" "+mouse_menu Orders"
bind "`" "toggleconsole"
bind "SPACE" "+jump"
bind "TAB" "+showscores"
bind "ESCAPE" "cancelselect"
bind "SHIFT" "+speed"
bind "CTRL" "+duck"
bind "F1" "Vote Yes"
bind "F2" "Vote No"
bind "F5" "jpeg"
bind "MOUSE1" "+attack"
bind "MOUSE2" "+attack2"
bind "MOUSE3" "+zoom"
bind "MWHEELUP" "invprev"
bind "MWHEELDOWN" "invnext"

// controller2 bindings
cmd2 +jlook       // enable joystick look
cmd2 bind "A_BUTTON" "+jump;+menuAccept"   // (A) button - Jump -menuAccpt allows 
                                           // us to make selections on hud menus
cmd2 bind "B_BUTTON" "+reload"    // (B) button - Reload
cmd2 bind "X_BUTTON" "+use"     // (X) Use
cmd2 bind "Y_BUTTON" "lastinv"    // (Y) button - swap pistol/rifle 
                                  //or z_abort -used to respawn as a ghost.
cmd2 bind "R_TRIGGER" "+attack"    // RT - Main weapon - Primary trigger
cmd2 bind "L_TRIGGER" "+attack2"    // LT - Melee
cmd2 bind "R_SHOULDER" "+lookspin"    // RB - Fast 180 spin
cmd2 bind "L_SHOULDER" "toggle_duck" // LB - Duck - is also used to give objects to people.
cmd2 bind "STICK1" "vocalize smartlook"   // LS - vocalize
cmd2 bind "STICK2" "+zoom"     // RS click - Rifle Zoom

// Fixed bindings, do not change these across joystick presets
cmd2 bind "BACK" "togglescores"    // (back) button - scores
cmd2 bind "START" "pause"     // (start) button - pause
cmd2 bind "S1_UP" "+menuUp"     // Hud menu Up
cmd2 bind "S1_DOWN" "+menuDown"    // Hud menu Down
cmd2 bind "UP" "impulse 100"     // DPad Up - Toggle flashlight
cmd2 bind "LEFT" "slot3"       // DPad Left - grenade
cmd2 bind "RIGHT" "slot4"     // DPad Right - health
cmd2 bind "DOWN" "slot5"       // DPad Down - Pills

Start the game. Display the console window and type Exec 360controller.cfg then set 
your split screen mode with the following console codes: "ss_splitmode 1" ("Horizontal-Cut"
for standard monitors) or ss_splitmode 2 ("Vertical-Cut" for widescreen monitors). Connect
to a server. Join the server with the connect [IP address] 2 console code. You must now 
set the Xbox 360 controller to player two (with the light on the Xbox logo pointing to "2").
To do this, quickly unplug and reinsert the Xbox 360 controller while the game is running. 
You can now play in Co-op mode in split-screen.

Shot the Car in the First Level:
If you shot the car in the first level, the best thing you can do is take off down towards
the safe point. And lock the door.

Play as infected:
Enable the "ent_fire !self setteam 3" code. After spawning and dying, press [Jump] until
 the camera changes into free roam mode. Then, enable one of the following "z_spawn" codes
to play as that type of infected. 

z_spawn smoker 
z_spawn tank 
z_spawn boomer 
z_spawn hunter 

Apartment Skip:
If you want to save a bit of time in campaign mode you can skip the entire apartment 
part of the first level. When you begin on the roof, turn around and look past the glass
roof. You will see a couple of fans near the floor, jump over to them and you will survive
from anywhere from 20 - 50 health.

Reload While Hitting:
If you haven't noticed this yet in Left4dead you can reload, hit a zombie and the game will
see it as if you didn't do anything but still reloading, so if you rune out of ammo start 
reloading hit any nearby zombies and then you will have reloaded your gun.

Hot Swap:
If you need to 'reset' your primary weapon to its original (cherry) state, pick up a weapon
different from yours, then re-select the weapon you want. This is faster than reloading (plus
the time used from replenishing from the ammunition pile), and can help in close-call rescue 

Reloaded Defence:
When reloading any weapon, your survivor can keep attacking with the melee button. The 
reloading sequence will continue unabated.

Fire. And Lots Of It:
The infected cannot extinguish fires once they are ignited (all modes - but especially in
versus mode). Use that to your advantage in the campaign by using the molotov (or igniting
gas cans) on tough targets like Tanks and Witches.

Speed Life:
As the director's commentary points out, the Tank can be outrun by any survivor with green 
(51% or more) health, but the Tank can overtake any survivor with 50% of less life, because
the more injured a survivor is, the slower s/he moves. Pain pills will boost the speed of 
an injured survivor, although the color of the life bar will reflect his/her original 
health status.

Hint: Respawn for Max Health in Vs.:
If you'd like to "refill" your health as a zombie, run away from the survivors until you
see a message claiming you are too far away. Now you'll be allowed end your current life
and then respawn back in the fray. Hopefully they won't make it to the safe room before 
you're back!

No Mercy level 3: Easy win as Infected:
This trick works best as a Hunter. Before you spawn in No Mercy level 3, go all the way to
the very end, at the hospital. Once up the ladder, turn to your right and there should be 
a dumpster. Move it all the way over to the manhole and one of two things will happen. It 
will either fall all the way down, which is bad because the Survivors can move it; or it 
will partially fall in. The survivors cannot move this at all. If you are a Tank, you can
move a car over it, which is better than any dumpster. From here, do not puke on them as 
a Boomer. It will attract the Horde. The Horde will try to move the object away from the 
manhole. Then, as Hunters and Smokers, you can just attack them. They may shoot you, but 
every so often, you can hurt them until finally they die.

No Mercy level 3: Easy way through:
Over by the trucks is a door that you can open later. However if you have some people 
meleeing it, it will eventually break.

No Mercy level 4: Easy win as Infected:
Before you spawn, go all the way up to floor 28, where the elevator lets out. Just outside
of the elevator is a generator. Move it in front of the elevator door. , if the Survivors 
know what you are doing, they can move it. It will require three survivors to move an object.
However if you have someone else on the Infected side, they can go a little bit further and 
move the forklift that is there in front of the doorway.

No Mercy: Easy kills:
In one part of the No Mercy chapter, the Survivors must jump into a sewer hole to enter
them. As an Infected, use this to your advantage. One must be a Smoker or a Hunter. Do 
not spawn; instead hide behind one of the large canisters in the room. Once the players
open the hole and are done checking the vicinity, they will jump in. Due to the fact they
must jump in one at a time or get stuck, make sure you have a clear view of the last one 
in line. Once all three are down and the fourth Survivor is still up, pounce or grab him.
By doing this he will not be able to be saved, unless someone throws a Molotov or a pipe

Tips on accomplishments:
Couple ways to get the not so easy accomplishments:

*Tank on Fire: When on the rooftop of the hospital, pick up the molotovs, and light an 
 area around you on fire, and then attract the tanks attention. 
*Dead Stop: Use a shotgun and run at a Hunter hitting the melee button repeatedly.

Get Unbreakable or Stand Tall Achievements:
Naturally, it's easier to achieve these on Easy, but just let the bots clean up the enemies
on the map. If you get healed, you can restart the map after dying and not have it work 
against you but if you're online, it will invalidate it.

Stay alive longer:
When hordes of Infected appear, find a room with a door and no windows. Go inside and close
the door. The Infected may break the door, but when you see a hole in it, shoot the Infected
trying to break it down. Your teammates can handle most of the Infected.

Use Fire Against Tough Infected:
Once an Infected is ignited, they'll burn out in any game mode, so it's best to take advantage
of using flammable weapons with them, especially the badder baddies like Witches and Tanks.

Defeating Tanks:
To kill a Tank faster, throw a Molotov cocktail or a gas tank and shoot it. When the Tank 
is on fire, shoot him with an assault rifle.

Unbreakable door:
If you are low on health and need somewhere to hide, find a bathroom stall. Go inside the 
stall and close the door. The door never breaks down. This works well if you are trying to
heal yourself.

Defeating Witches:
To kill a Witch faster, throw a Molotov cocktail. When the Witch is on fire, shoot her 
with an automatic shotgun.

Kill two zombies with one bullet:
Use a sniper rifle and zoom in on a group of zombies. When you see a zombie standing behind
another one, shoot at the one in the front. The zombie in back will also get shot.

Defeating Survivors:
When Hunters are on fire, their pounces and attacks on Survivors do significantly more 
damage per hit. Use this to your advantage and deliberately set yourself on fire with the
many fire pits or burning cars, then attack. This allows you to easily down Survivors. 
Note: This only works for Hunters, not Smokers, Boomers, or Tanks.

Disfigured Zoey's Hand:
On the campaign poster for No Mercy, Zoey's right hand, whilst holding the pistol, is 
disfigured, having formed a second hand off of it.

Unlock the Rocket Launcher:
Once you beat the game, you'll unlock the rocket launcher which will be available on 
any level in the beginning and middle.

Blood Harvest level 2: Easy win as Infected:
In Versus mode, there is a warehouse-type area immediately after the starting safe room. As
a zombie, quickly run back to the emergency door on the other side of the warehouse. There 
should be a forklift near the door. Spawn and push this forklift in front of the doorway. 
Note: You may need to break the white door in front of the emergency door to get the forklift
all the way in front of the doorway.

Punch Twice as Fast:
Alternate tapping the melee button and the weapon switch button rapidly to double your melee
speed. This can be useful for beating off zombies on Expert difficulty. 
Note: This may be banned in Versus mode.

Shortcut in No Mercy:
In Part 1 (The Rooftops), as soo as you start, look over the edge of the building, down to 
the street. There's a box partway down, possibly an air conditioner. Hop down to that and 
it should reduce you to 41% life. Drop to ground from there to skip the interior of the 
apartments entirely.

Hunter Wall Jumping:
To jump off of the walls of buildings as a Hunter in Versus mode, simply crouch to charge
your jump. Click the mouse to jump, then, as soon as you hit the wall, quickly turn your 
character around so that you're at least facing 180 degrees from your original point of 
view, before the Hunter begins to drop. Quickly click the mouse again, whilst still holding
the crouch button, to propel yourself off the wall and further into the air.
This trick is useful for reaching higher places. It may take some practices to perfect.

Reload whilst Meleeing:
This trick has only been proven to work with either of the two shotguns, due to the fact
that reloading cause the bullets to stack, and isn't reloaded with one single clip. To 
perform the glitch, simply press the melee button as soon as you choose to reload. You 
character will initiate the melee action, which will knock the infected back, therefore
cancelling the reload animation. Despite this, your gun will still continue reloading,
making it much easier to keep yourself safe whilst reloading the shotgun.

Complete the following task to unlock the corresponding achievement. Enabling cheat
codes will prevent achievements from becoming unlocked.

101 Cremations (20)  - Set 101 Infected on fire.
Akimbo Assassin (30) - Survive an entire campaign using only pistols.
All 4 Dead (30)      - Kill all four Survivors in one life while playing as a Tank.
Barf Bagged (20)     - Cover four Survivors with Boomer bile at once. 
Big Drag (20)        - Drag a Survivor 100 feet with your tongue.
Brain Salad (15)     - Make 100 headshot kills.
Burn the Witch (10)  - Light a Witch with a Molotov.
Chain Smoker (20)    - Constrict two Survivors in one life as a Smoker.
Clean Kill (10)      - Shove a Boomer and then kill him without him splashing on anyone.
Cr0wnd (30)          - Kill a Witch with a single headshot.
Dead Baron (15)      - Survive the Dead Air campaign.
Dead Giveaway (10)   - Heal a fellow Survivor when your own health is below 10.
Dead Stop (10)       - Punch a Hunter as he is pouncing.
Dead Wreckening (20) - Dole out 5000 total Survivor damage as a Special Infected.
Do Not Disturb (20)  - Sneak past all Witches in a campaign without disturbing one.
Double Jump (20)     - Pounce two different Survivors in one life as a Hunter.
Drag and Drop (20)   - Rescue a Survivor from a Smoker's tongue before he takes damage.
Field Medic (20)     - Heal 25 Survivors with a first aid kit.
Grim Reaper (15)     - Survive the Blood Harvest campaign.
Ground Cover (30)    - Save another Survivor from a Special Infected while on the ground.
Helping Hand (20)    - Revive 50 incapacitated Survivors.
Hero Closet (10)     - Rescue a Survivor trapped in a closet.
Hunter Punter (10)   - Shove a Hunter off of a pinned and helpless Survivor.
Jump Shot (20)       - Headshot a Hunter while he's leaping.
Man vs Tank (30)     - Single-handedly kill a Tank.
Mercy Killer (15)    - Survive the No Mercy campaign.
My Bodyguard (15)    - Protect any Survivor from an attacking Infected 50 times.
Nothing Special (30) - Survive a campaign with no Survivors taking damage from Special Infected.
Pharm-assist (20)    - Give pain pills to 10 Survivors.
Pyrotechnician (20)  - Blow up 20 Infected in a single explosion.
Red Mist (20)        - Kill 1000 Infected with a mounted machine gun.
Safety First (30)    - Play an entire campaign with no Survivors taking friendly fire damage.
Spinal Tap (10)      - Kill an Infected with a single blow from behind.
Stand Tall (20)      - Survive a campaign without being incapacitated.
Stomach Upset (20)   - All Survivors complete a campaign without being vomited on.
Tankbusters (20)     - Kill a Tank without it dealing any damage to a Survivor.
Toll Collector (15)  - Survive the Death Toll campaign.
Tongue Twister (20)  - Free yourself from a Smoker who has grabbed you with his tongue.
Unbreakable (30)     - Finish a campaign without ever being healed.
Untouchables (30)    - No Survivors take damage after contacting the rescue vehicle.
Violence Is Golden: Earn a Gold medal in Survival mode on any official level. 

Witch Hunter (20)    - Kill a Witch without any Survivor taking damage from her.

No Mercy: The Sewer: Easy way through:
Over by the trucks is a door that you can open later. However if you have some people 
meleeing it, it will eventually break.

"Dead Air: The Construction Site": Shortcut:
In "The Construction Site", there is a metal door and a raised fence by the barricade that
you burn. Jump on the fence and follow it until it begins to go downward. At this point, 
jump on the metal siding "door". Note: Some practice may be required.

* In Dead Air, before the finale, while still in the safe room, sometimes you can see a 
  box which advertises Valve Software's "Team Fortress 2". (Mostly works on Xbox version)

* The APC in Blood Harvest that says "TK-421" is a reference to a stormtroopers in Star 
   Wars that Luke Skywalker and Han solo incapacitated.

* At the Boathouse in Deathtoll, even on expert, a healthpack and pills spawn in the 
  bathroom across the field from the house.

* You can see th burning city of Newburg from Dead Air at the end of Death Toll.

* Tanks float when dead.

* The open area at the end of Death Toll is a great area to get the "Man Vs. Tank" 
  Achievement. There is enough room to fend off the hoard yourself and enough to deal
  with the tank.

* John Slater, who voices the person who drives the boat in Death toll also voices the 
  Sniper in Team Fortress 2.

* In the hospital levels of No Mercy, there are alot of X-rays with only 4 fingers, 
  referencing to the cover art.

* On the movie poster for No mercy, Zoey has 3 hands holding her gun.
  (You have to look very closely.)

* If you are a Infected when the elevator in No mercy is activated and heading down,
  the number of what floor it is on will not change from "04" in reference to the 

* In the hospital chapters starting safe room, there is graffiti on the wall saying 
  "I killed..." and then listing different variables, including 53,594, the number of
  infected you have to kill to receive the "Zombie Genocide" Achievement.

* At the beginning of the sewers in No Mercy, if any gas tank catches fire, or shot, 
  the entire station explodes into flames.

* Near a escalator in The subway, there is a ad for "Orange Box" Juice, referencing to 
  one of Valves vastly popular game packages.

* In some of the newspapers that you can see throughout the game, Dr.Breen can be seen
  from "Half Life".

Record Gameplay:
To record your gameplay using the Command Console, simply type in "Record" then a space
and then any name you want it called. It will then record the gameplay. If you type in 
"Stop" in the CMD, it will stop recording. If you progress a level, the recording will 
stop and create a new file for the next map, adding an "_" and an integer (eg. "_02") 
to the end of the original file name. You can watch the recording at any time by typing
in "playdemo" then a space and then the file name.

Unbreakable Achievement Help:
If you get badly hurt(to the point that your character is limping) the A.I. players 
will try to heal you, a way to not let them heal is to keep your health pack out and
they will not try to heal you which means that you will have to keep out your health
pack the whole campaign which means you have to fight with it too.

Hunter Glitch - Silent and Run While Crouched:
As a Hunter in "Ghost Mode" (Blue Screen), walk into an object that you can move through.
ie. Crates, Doors. Press the crouch button for a a split second, and if done correctly, 
your view will be seemingly crouched and you fun twice as fast (while still in Ghost Mode).
After you spawn, your Hunter is completely silent and will not be detected ("There's a 
Hunter over there!") by Survivors, as well as be able to run around. From this, you can
pounce straight away without having to wait for your meter to build up. However, you can
only pounce once, otherwise you will then fix up the glitch until you die and try it
again in Ghost mode. The same goes for crouching again and jumping. You can still Melee,
climb and walk off edges.

Fire an entire clip in 1 second:
This will work with only the full auto guns, aka the Uzi submachine gun and the assault
rifle. This works in 360 version and might work on PC. 

* Equip the Handgun, hold down melee (LT) until you swing twice.
* While still holding down melee, switch to your full auto gun (Y) and hold down the 
  fire button (RT).
* Keep holding down both LT and RT until you have held down RT for 7-10 seconds, 
  then let go of LT only.

If done right, you will fire the entire full auto clip at once in a manner of 1 second,
and the game registers as all the rounds being fired. This works really well for Tanks 
as long as you can hit them of course. If all 4 people can manage to do this on a Tank,
he will be either dead or fairly close to dead within like 10 seconds.

Easy "Untouchables" achievement:
In No Mercy, Level 5, when you climb to the rooftop, there is a small building with
a satellite dish by where the helicopter lands. Climb on top of this building. There
is a small staircase on one of the sides leading up to a sealed door (only zombies 
can open it). Stand above it on the edge, and knock the zombies down as they come up.
Eventually one will knock the door down. The Survivors can stand against the back wall
in the room, and no infected will come in, including the Tank. Once the helicopter 
lands, throw a pipe bomb, and quickly run to the helicopter.

Stronger Hunter:
When Hunters are on fire, their pounces and attacks on Survivors do more damage per 
hit. Use this to your advantage, and deliberately set yourself on fire with fire pits
or burning cars, then attack. This allows you to easily down Survivors. 
Note: This only works for Hunters, not Smokers, Boomers, or Tanks.

Easy "Man vs. Tank" achievement:
Play Dead Air, Runway Finale on the Easy difficulty. Once you have made it to the 
tanker, refill your ammo, grab a pipe bomb or Molotov cocktail, then answer the radio,
and start the gas pump. Once the pump is activated, run around to the right-hand side 
of the rescue plane, and prepare to fight off the Horde. A benefit of this position is
that the Horde cannot come at you from behind. When it is time for the Tank to appear,
it will usually spawn on the far side of the plane. Run up to opposite side, then run 
back and forth without coming around the plane to your side. Your AI teammates will 
not shoot the Tank when it is on the other side of the plane. By crouching you will 
be able to easily aim at the lower body from beneath the plane and take it down 

sb_all_bot_team 1,director_force_versus_start,directortor_no_human_zombies 0:
Submitted by: allen von de lucia

First click console then type this sv_cheats 1, director_force_versus_start, and 
director_no_human_zombies 0 then press M and then that,s it your an survivor/infected

Blood Harvest - Farmhouse Raid: Easy win:
At the end where you do the farmhouse part, an easy way to win is fill up with ammo.
Get the health kit and find the barn. Climb up the ladder. You can sometimes find a 
ammo supply. You can easily cover the window and the bottom of the barn, Be careful 
when you need to get a rescue.

Stay alive longer:
If you are low on health and are alone, allow the CPU controlled players to attack 
Witches and Tanks. This will keep you from dying and also weaken enemies. The CPU 
characters will later appear behind a closed door with 50 health.

Blind Witch:
Submitted by: Scrake

First, go to console and type, nb_blind 1. Then when you see a witch, you don't have 
to be careful about disturbing her unless you run into her.

No Mercy/The Subway/Easy win as Infected:
When the survivors get to the area where they have the minigun and the gate they have
to open up, there will be a hole in the floor which you can spawn as a Smoker. You 
can pull them through the floor countless times.

Easy "Cr0wnd" achievement:
* Play under the Easy difficulty setting. Get an auto-shotgun and find a Witch. Quickly
  approach the Witch with lights off and force her to rise. Quickly shoot her head as 
  she stands. 

* Get the assault rifle and charge a power shot (start with pistols, then hold "LT" + "Y"
  + "RT" at the same time). If done correctly, your character will hold out his/her hand 
  as if to grab an object. If you hit a Witch under the Easy difficulty with the charged 
  power shot, she will die. You will get the "Cr0wned" achievement regardless of whether 
  or not you hit her head.

Easy "Man vs. Tank" achievement:
Start any level except for the first chapter of any campaign. Have the difficulty set to
Expert. When you start the level, kill the bots. After you kill all the bots, vote to 
change the difficulty to Easy. Note: In Single Player mode you will automatically win 
the vote, but it is best to perform this in Offline Co-op mode so that you have someone
to help dispose of Hunters and Smokers. Find Tank and kill him without help to earn the 

Death Toll - Skip Horde:
Info: This trick must be done online. When you are at the crane that triggers a car alarm,
do not turn it on. Instead, stand behind it and become idle. You should be teleported to 
an alley beyond the crane. 
Info: If you do this, you cannot get back. Make sure you are prepared for a possible Tank.

Steam achievements:
Complete the following tasks to unlock the corresponding achievement. To view your 
achievements and stats in Steam, select "Community", then "My profile", then "View all 
my games", then the game and view stats. 

20 Car Pile-Up     : As A Tank hit 20 Survivors with a car in the Crash Course campaign.
Crash-Proof        : Survive the Crash Course Campaign.
Jumpin' Jack Smash : Pounce a Survivor for 25 points of damage in the Crash Course campaign.
Quick Power        : Restart the generator within 30 seconds of it shutting off.
Slippery Pull      : Smoker pull a bile-covered Survivor until you hold him during Crash Course.
Smash Hit          : Win a Versus campaign of Crash Course.
Tank Stumble       : Stun a Tank with an explosion in the Crash Course campaign.
Truck Stop         : Your team wipes all Survivors after the escape vehicle has opened in Crash
Wipefest           : Your team incapacitates three Survivors within five seconds.

Solo a campaign:
Start a single player campaign. Enable the kick code for every player beside yourself, and 
you will be the only one remaining. You can now solo the campaign. Although there are no 
achievements for completing a campaign by yourself, it is still fun. Watch out for special
Infected; because if they get you, you are dead.

Expert difficulty recommendations:
Be careful not to shoot your allies. It is not worth killing two zombies if you have to down 
an ally to do it. Do not bother searching for items. The longer you linger, the more zombies 
will spawn. However, if you see something along the way, feel free to pick it up. However it 
is probably not a good idea to go out of your way for it. If someone gets pinned or grabbed 
by a Smoker, sometimes it is easier to free them by simply going up to them and pressing the
LT Xbox 360 . Most people think you need to run from the Tank, but even under the Easy and 
Normal difficulties you must to kill two Tanks before the rescue vehicle arrives. Therefore
it is not possible to run all the way back to the safe room. The very best way to kill the 
Tank is to have everyone fire at it while the person it is after tries to dodge and fire at 
the same time. Even under the Expert difficulty setting it should not live more than a minute
if everyone just stays calm and shoots at it. There is no way to pass the Tank without shooting
it. Although if you are at the start it might be a good idea to go back, but during the infinite
horde during the finale it is not logical.

Reload shotguns during melee attacks:
This trick works with either shotgun because reloading causes the bullets to stack, and they 
are not reloaded with one single clip. To perform this trick, press [Melee] as soon as you 
choose to reload. You character will initiate the melee action, which will knock the Infected
back, and therefore cancel the reload animation. Despite this happening, your gun will continue
to reload. This makes it much easier to keep yourself safe while reloading the shotgun. 

Hunter runs while crouched:
As a Hunter in "Ghost mode" (blue screen), walk into an object that you can move through (for
example, a crate or door). Press [Crouch] for a moment. If done correctly, your view will be 
crouched and you will run twice as fast while still in Ghost mode. After you spawn, your Hunter
will be completely silent and cannot be detected by Survivors, as well as be able to run around.
In this state you can pounce immediately without having to wait for your meter to build. However,
you can only pounce once, otherwise the glitch will end. You can die and try it again in Ghost 
mode. The same thing happens when crouching again and jumping. You can still melee, climb, and 
walk off edges.

Couple of cool cheat codes/Funny glitch:
Submitted by: L4Dfreak1

First thing you need to do is enable console (which you will find in options menu) then change 
mission to NoMercy and Chapter 1. (apartments)then opens up console (press ~) and type in 
"sv_cheats 1" Then "z_tank_throw_force 999999999" Then "god 1" exit console and then jump off 
of apartment on to right hand side
get near the truck thats half way in the map and spawn a tank (type z_spawn tank in console)
Let the tank hit you and your survivor when be hanging from side of truck (like when you walk 
off buildings you get incappicated and hang on to the ledge) But surprisingly The ground aint 
even an inch from your feet xD
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