Press ~ during game play to display the console window. Enter one of the following codes to activate the corresponding cheat function.

Effect	Code
All enemies have 1 HP	pkweakenemies
All weapons	pkweapons
Bodies will never disappear	pkkeepbodies
Decals never disappear	pkkeepdecals
Demon morph	pkdemon
Fast movement	pkhaste
Full ammo and health	pkpower
Full ammo	pkammo
Full health	pkhealth
God mode	pkgod
Gold	pkgold
Weapon modifier mode	pkweaponmodifier