Cheats:
Go to Public/Public Documents/Precursors/INI/ and open the ENGINESETTINGS.INI with Notepad and change Enabled=0 to Enabled=1 and save it. Now while playing, type any of the following cheats in the console:
Code - Result:
god - God Mode
supergod - Invisibility
addarmor ## - Add More Armor (# = 1-99)
addhealth ## - Add More Health (# = 1-99)
addammo ## - Add More Ammo (# = 1-99)