[Major Azzhole]

Start the game with:
+set ui_console 1 +set cheats 1 +set thereisnomonkey 1

Then during a single-player game, press ~ for the console and type any of the following "Codes": Code Effect
dog God Mode
fullheal Full Health
wuss All Weapons and Ammo
noclip No Clipping
notarget Show Game Version
listinventory List Inventory
tele x y z Teleport to Location x y z
coord Shows Location
health Set Current Health
kill Kills Player
giveweapon weapons/(weapon_name).tik Gives Player (weapon_name)

Be sure to teleport behind anyone that flames me and shoot them in the back of their heads