To open the console in the game, press the (~) key.

Code	Effect
aidisable 1	disable AI
aigodmode 1	enable God mode for AI
aihollowman 1	enable invisibility
aitrace 1	show info about the AI in console
camDistance 1.5	default third person camera distance (you can use any value)
camfov 90	default camera FOV (you can use any value)
frametime 0.001	ultra slow motion
frametime 0.01	slow motion
frametime 0	normal game speed (you can use any value)
frametime 1	ultra fast game speed
gunfov 60	default gun FOV (you can use any value)
showhealth 1	shows player health on screen
showmemory 1	shows memory info on screen
showmodelinfo 1	shows model info
showposition 1	shows player camera position
showstats 1	shows rendering statistics
showstatsex 1	shows extra rendering statistics