Press TAB or ~ to display the console window, then activate the following cheats by entering the corresponding codes:
CHEAT FUNCTION - CHEAT CODE Full ammo for current weapon - allammo Full ammo for all weapons in inventory - allammo 999 Flight mode - fly No clipping mode - ghost Disable flight and no clipping modes - walk Invincibility for current level - god Add weapon or item to the world [NOTE 1] - summon Toggle time - playersonly Jump to indicated map [NOTE 2] - open Third person view - behindview 1 First person view - behindview 0 Set game speed [NOTE 2] - slomo<0.0-10.0> Kill monsters - killpawns Kill all bots (multiplayer) - killpawnsbot Kill all of indicated enemy type - killall Invisibility - invisible Spawn indicated number of bots - addbots Broadcast message to other players - say Cannot drown - amphibious Suicide - suicide Preferences menu - preferences Play dead - feigndeath Unlimited charge for selected item - set charge 9999999999 Reset graphics and textures - flush Toggle game pause - pause
NOTE 1: Set according to the following list. NOTE 2: Set according to the following list. NOTE 3: Set to 1.0 for normal speed.