Start the game with the -console command line parameter. Press [Tab] during game play to display the console window at the bottom of the screen. Then, enter one of the following codes to activate the corresponding cheat function.

Effect	Code
God mode	god
Three weapons with full ammo, depending on character	allweapons
Full ammo for weapons/grenades	allammo
Flight mode	fly
No clipping mode	ghost
Disable fly and ghost codes	walk
Faster rate of fire	fastweapons
Spawn indicated object	summon [name]
Replace weapon. See Note 1	ReplaceWeapon [weapon name]
Skip mission	CampaignNext
God and Ghost modes	superman
Disable God and Ghost modes	clark
Field of view by number	fov [number]
Remove all stat display	stat none
Display all stats	stat all
Display framerate	stat fps
Display network stats	stat net

Note 1. Equip the weapon you wish to be replaced then enter replaceweapon followed by a weapon-related summon code (for example, ReplaceWeapon EquipmentClasses.WeaponGrappler)