The following codes are for SINGLE PLAYER ONLY. Press tilde [~] to open the console, then type:
Code - Result:
god - God Mode
allammo - All Weapons
loaded - 999 Ammo
fly - Fly Mode
walk - Walk Mode
behindview 1 - 3rd Person View
ghost - No Clipping Mode
addbots # - Add # of Bots
allweapons - All Weapons
switchteam - Switch Team
playersonly - Freeze Time
killbots - Kill All Bots
open [mapname] - Open Map [mapname]
setgravity # - Set Gravity to #
setjumpz # - Set Height of Jumps to #
setspeed # - Set Gameplay Spped to #
slowmo # - Slow Motion
teleport - Teleport to Crosshair


Spawn Weapons / Items
Type the following commands in the console to spawn that weapon or item:

summon xweapons.redeemerpickup - spawns a Redeemer.
summon xweapons.assaultriflepickup - spawns Assault Rifle.
summon onslaught.onsavrilpickup - spawns Avril.
summon xweapons.bioriflepickup - spawns Bio Rifle.
summon xweapons.flakcannonpickup - spawns Flak Cannon.
summon onslaught.onsgrenadepickup - spawns Grenade Launcher.
summon xweapons.painterpickup - spawns Ion Painter.
summon xweapons.sniperriflepickup - spawns Lightning Gun.
summon xweapons.linkgunpickup - spawns Link Gun.
summon onslaught.onsminelayerpickup - spawns Mine Layer.
summon xweapons.minigunpickup - spawns Minigun.
summon xweapons.rocketlauncherpickup - spawns Rocket Launcher.
summon xweapons.shieldgunpickup - spawns Shield Gun.
summon xweapons.shockriflepickup - spawns Shock Rifle.
summon utclassic.classicsniperriflepickup - spawns Sniper Rifle.
summon Onslaught.ONSHoverTank - Summon a Goliath.
summon Onslaught.ONSPRV - Summon a Hellbender.
summon xweapons.supershockriflepickup - summon a Instagib Shock Rifle.
summon Onslaught.ONSHoverBike - Summon a Manta.
summon Onslaught.ONSAttackCraft - Summon a Raptor.
summon Onslaught.ONSRV - Summon a Scorpion.