Start game as usual, in game - bring up the console with ~ and 
input the following codes (NOT CaSe SeNsItIvE): 

PKGOD - toggle 'godmode' on/off 
PKDEMON - toggle 'demon morph' on/off 
PKWEAKENEMIES - toggle 'enemies get 1 hp' on/off 
PKALWAYSGIB - toggle 'excessive gibbage' on/off 
WEAPONSPECULAR 1/0 - toggles 'weapon specular' on/off 
PKWEAPONS - gives all weapons 
PKAMMO - full ammo 
PKHEALTH - full health 
PKPOWER - full ammo/health 
PKGOLD - lots of gold 
PKHASTE - toggle haste on/off 
PKWEAPONMODIFIER - toggle 'weapon modifier mode' on/off 
PKKEEPDECALS - toggle 'decals will never disappear' on/off 
PKKEEPBODIES - toggle 'bodies will never disappear' on/off 
PKCARDS - ? 

NOTE: 
Cheats are active only in Daydream and Insomnia difficulty modes! 


Additional console commands: 

JOIN 
SPEEDMETER 
CROSSHAIR 
FRAGLIMIT 
CAMERAINTERPOLATION 
PLAYERPREDICTION 
MSMOOTH 
ROT 
TIMELIMIT 
NETSTATS 
NOTREADY 
POS 
MAP 
READY 
HUDSIZE 
BREAK 
DEMO 
STRESSTEST 
SHOWWEAPON 
UPDATEPARAMS_PHYSICSITEMS 
UPDATEPARAMS_PLAYERS 
UPDATEPARAMS_MYPLAYER 
UPDATEPARAMS_PROJECTILES 
SERVER 
FOV 
ACTIONSENDPERIOD 
MSENSITIVITY 
NAME 
TEAM 
MAXPACKETSIZE 
EXIT 
QUIT 

REPACKNOTE: sorry, we forgot to include the pkweapons cheat. 

(c)Team PiZZADOX