Start the game with a shortcut with the following command line parameters to activate the corresponding cheat function. Note: Enabling the "God mode" or the "Unlimited ammunition" codes before the tutorial is completed (which is after you have delivered the tape to the church) will glitch the game

Effect	Command line parameter
God mode	-GameProfile_GodMode 1
Skip introduction sequence	-GameProfile_SkipIntroMovies 1
Unlimited ammunition	-GameProfile_UnlimitedAmmo 1
Weapons never jam	-GameProfile_UnlimitedReliability 1
Unlock all weapons for current area	-GameProfile_AllWeaponsUnlock 1