Press ~ during game play, then activate the following cheats by entering the corresponding codes. Note: Entering a code without its numeric value will display the current value:
CHEAT FUNCTION - CHEAT CODE Toggle God mode - god <0 or 1> Toggle no clipping mode - noclip <0 or 1> Toggle gravity; default is 1 - gravity <0 or 1> Set level of detail - lod <number> Set running speed; default is 125 - speed <number> Set vertex shaders - vshaders <number> Toggle bump mapping - bump <0 or 1> Toggle debug menu - debug <0 or 1> Toggle enemy attacks; default is 0 - disable_ai <0 or 1> Toggle framerate; default is 0 - 'fps' <0 or 1> Toggle HUD; default is 1 - hudenable <0 or 1> Toggle shadows - shadows <0 or 1> Toggle smooth shadows - smooth_shadows <0 or 1> Toggle wireframes; default is 0 - wire <0 or 1> Unknown - selfshade <number> Unknown - person_bump_dist <number> Unknown - obj_bump_dist <number> Unknown - obj_bump_dist <number> Unknown - drawstatic <number> Unknown - drawsmoke <number> Unknown - checksmoke <number> Unknown - calcsmoke <number> Unknown - objshadows <number> Unknown - ps 20 <number> Unknown; default is 0 - addtool <0 or 1> Unknown; default is 0 - movie <0 or 1> Unknown; default is 0 - persons <0 or 1> Unknown; default is 0 - mover <0 or 1> Unknown; default is 0 - ragdoll <0 or 1> Unknown; default is 0 - contacts <0 or 1> Unknown; default is 0 - enabled <0 or 1> Unknown; default is 0 - nakmodel <0 or 1> Unknown; default is 0 - trimesh <0 or 1> Unknown; default is 1 - phizik <0 or 1> Unknown; default is 1 - drawpersons <0 or 1> Unknown; default is 1 - pers_move_check <0 or 1> Unknown; default is 1 - pers_move <0 or 1> Unknown; default is 1 - wave_trace <0 or 1> Unknown; default is 1 - newtrace <0 or 1> Unknown; default is 1 - portals <0 or 1>
Headshots are registered at the chest of the human enemies. Shooting the head will trigger changes in the models (for example, them losing their head or face), but shooting/blasting them directly on the chest might kill an enemy with one shot.
