To enter these codes, bring up the console by pressing the tilde (~) key, then enter the desired code.

Code       Effect
AMMO       Full ammo and guns
LOGAN      God mode
NOTARGET   Invinsibility
NOCLIP     Walk through walls
FLY        Flight mode

Type "God" on the message screen. It will say "God mode enabled" When you exit the message screen it will say "Sinister has changed the cheat code" at the top left of the screen. You will not have god mode, and you take more damage.