Operation Wolf

Cheat Codes:
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Press [F10] at the high score screen to enable cheat mode. 
The text "High Scores" will change to "Firm Help" to confirm 
correct code entry. Press one of the following keys during 
game play to activate the corresponding cheat function. 

Effect            Key
-----------------------
Health and ammo   [F7]
Level skip        [F8]
Invincibility     [F9]


Extra ammunition:
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Shoot the animals (eagles, pigs, etc.) during game play to 
collect more ammunition.