Various cheats
     To activate and use the Cheat Codes for this game, While playing, 
press the Talk button (the default key is T), and then type any of the 
following codes and press [Enter].

Cheat code:         Result:

god                 God Mode

ammo                Full Ammo

guns                All Weapons

kfa                 All Weapons, Full Ammo

tears               Unlimited Ammo

poltergeist         Ghost Mode

maphole             Skip Level