In SinglePlayer and during gameplay press and enter iamtheone to activate cheat mode. Now enter any of the following "Codes":
Code Effect
god God Mode
loaded All Weapons
allammo All Ammo
ghost No Clipping
fly Fly Mode
walk Walk Mode
killall class Kills all Enemies of a class
playersonly Freezes Time Again to UnFreeze
behindview 0 or 1 Normal View or Behind View
open mapname Jump to mapname
summon unreali.item name Spawn item name
summon unreali.opponent name Spawn opponent name
addbots Add of Bots
say message Broadcast message to Others
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