Half-Life - They Hunger

Cheat Codes:
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Enabling the console window:
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At the main menu, select "Configurations"< then "Controls". Find the 
sentence "Use voice communication" then set "V" as the key to bind it 
to. When you display the console window, you can now type on it.

Kill the pilot:
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Go to the point where you see the pilot. Go onto the helicopter before the 
last two Bosses. Enter the god code in the console window, and drop off where 
the helicopter is located and find the pilot. Just as he is going onto the 
helicopter, kill him. Stay near the helicopter. If done correctly the "Your 
rescuer has died" message will not appear, and you can continue. When you go 
onto the helicopter, wait until you stop and go out of it. 
Look at the cockpit of the helicopter; the pilot is there again.

Alternate Half-Life:
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Type map c0a0 at the console window. You will start on Half-Life with 
the Half-Life: They Hunger weapons instead of the normal weapons. Some 
of the enemies are also different. For example, Gman is now the Sheriff.
The Scientists are now civilians. Barney looks different, and the head 
crab zombies are now zombies from Half-Life: They Hunger. When you are 
playing in this state, the game autosaves when it touches a autosave 
trigger. The voices are the same. For example, the endgame level on 
Half-Life with Gman is the Sheriff, but Gman's voice plays on the Sheriff. 
Note: The Houndeyes on Half-Life are now zombie dogs, however they still 
use the Houndeye weapon that produces an electric field.

Move without the zombie bull:
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Enter the impulse 101 code in the console window at the point where you are 
taken by a zombie bull in a little carriage you cannot escape from. Kill the 
bull with a powerful weapon. After the bull is dead, you are still moving 
without a bull taking you.

Stuck in police station:
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Go upstairs towards the three doors. When the lights turn off, use your 
flashlight and quickly go down the stairs into where you shot the orange 
buttons. If done correctly, you will hear a hit noise on you then the 
screen will turn black for a few seconds. The screen will return and you 
can see again. When you try to go back upstairs, you still do not get 
caught; you will have to restart to continue.

Map names:
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Use the following entries with the map  console command.

Thintro 
They1 
They2 
They3 
They4 
They5 
They6 
They7 
They8 
They9 
They10 
They11 
They12 
They13 
They14 
They15 
They16 
They17 
They18 
They19 
They20 
They21 
They22 
They23 
They24 
They25 
They26 
They27 
They28 
They29 
They30 
They30a 
They31 
They32 
They33 
They34 
They35 
They36 
They37 
They38 
They39 
They40 
They41 
They42 
They43 
They44 
They45 
They46 
They47 
They48 
They49 
They50 
They51 
They52 
They53 
They54 
They55 
They56