All cheats for this game by platform:
PC
Primary Collection of Cheats
Cheat Mode
To use the cheat codes, type them in while pressing [Ctrl] key. Weapon and ammo cheats will indicate their success by the "picked up item" sound and effect:
nrg - Add suit energy
otwo - Add oxygen
map - Show items, monsters, and projectiles in map view
bye - Invisibility
nuke - Invincibility
see - Infravision
wow - Extravision
mag - Pistol
melt - Fusion gun
puff - Shotgun
rif - Rifle
zip - SMG
toast - Flamethrower
pow - Rocket
pzbxay - Alien gun
ammo - Lots of ammo
Load any Level
To warp to any level hold down the [Ctrl]+[Shift] keys and then click on the "new game".