|F1||F1||*Infinite Health/No Damage/Stun*|
Stops enemies hitting you at all. Stops you getting hurt (Infinite Health) and you don't get that screen crazyness when you get punched, slapped, stabbed or shot.
Gives you infinite ammo and grenades, when you shoot the bullet it gets re-added to your total ammo supply.
Give yourself just a bit of help against the spawn of satan with a never decreasing armor supply.
Gives you infinite stamina so you never have to stop running away from those monsters ;)
Gives you an unlimited air supply for those trips out into the mountains of mars. armor supply.
Removes their brain... look at 'em go!
Makes you jump really high. Make sure you're using infinite health or you'll splat when you come back down! This should also come in handy if you get stuck down a hole where you should have died but didn't because of the infinite health option.
Makes ya move like Linford Christie, another option for the scared people! (i use this :s)
Unlocks all doors, no need to run around looking for keys!