The following codes are for SINGLE PLAYER ONLY. Press ` to bring down the console, then type:

Code	Result
iamtheone	Activate Cheat Mode
god	God Mode
loaded	All Weapons
allammo	All Ammo
ghost	Walk Through Walls
fly	Fly Mode
walk	Walk Mode
killall [class]	Kills All Enemies of a Certain [class]
playersonly	Freezes Time, Type Again to UnFreeze
behindview 1	View Character from Behind
behindview 0	Normal View
open [mapname]	Jump to Any Map
summon [item]	Summon Item (see list below)

SUMMON Items:

WarHeadLauncher
Enforcer
DoubleEnforcer
Minigun2
PulseGun
ShockRifle
SniperRifle
UT_BioRifle
UT_Eightball
UT_FlackCannon
Chainsaw