Press the tilde (~) beside the 1 button and type for the following:
wuss - all weapons
superfuzz - god mode aswell as unlimited ammo
wallflower - no target (enemies don't see you)
noclip - or nocollision - walk through walls
spawn ##### - replace ##### with one of the following:
rockets - rockets
sniperrifle - sniper rifle
shotgun - shotgun
shotgunclip - shotgun shells
flakpants - armour
flakjacket - armour
riothelm - armour
coin - coin
can - trash can
health - 10 health
megahealth - 100 health
heligun - copter gun from first level
thrallgun - looks like asault gun but fires rapid missiles, to go to it push the ? button until you get there or see bottom
peon - spawns one of the monsters --------------------------------------------
give ##### - gives you the item directly Or type: Give [Item] [Quantity] -------------------------------------------
If you want to skip to a certain level just type (map #####)
replace ##### with one of these mapnames:
intro, bank, abandon, csite, subway, chem1, chem2, whouse1, whouse2, biomecha, biomechb, silo, sewera, sewerb, aq1, dam, wworks1, wworks2, oilrig, uwpass1, uwpass2, docks1, docks2, geo1, geo2, jungle1, jungle2, gorge, area57, biomass, xeno1, xeno2, mansion1, mansion2, phoenix,