Go to the console window and type one of the following codes, then press Enter to activate the corresponding cheat function:
God mode: Cheat.GodMode()
Full health: Cheat.FullHealth()
Med pack: Cheat.GiveHealtex()
12mm: Cheat.GiveAmmo12mmShort()
BFG looking energy gun D250 R30: Cheat.GiveOCIX4()
Doom looking plasma gun D400 R100: Cheat.GiveLeRogue()
Half-Life looking modded revolver D150 R250: Cheat.GiveBjornHD()
14mm Sniper ammo: Cheat.GiveAmmo14mmLong()
Rocket ammo: Cheat.GiveAmmoRockets()
Shotgun Shells: Cheat.GiveAmmoShotgun()
Energy for guns: Cheat.GiveAmmoEnergy()
Energy Charger: Cheat.GiveOCS()
Standard Grenade: Cheat.GiveGrenade()
Banana Bomb: Cheat.ClusterGrenade()
Pistols: Cheat.GiveAmmo9mmShort()
8mm ammo: Cheat.GiveAmmo8mmLong()
150 Damage 1m range: Cheat.GiveKnife()
Starting Pistol D40 R150: Cheat.GiveTC234()
Silenced Pistol D35 R125: Cheat.GiveTC234Sup()
Starting Rifle D55 R220: Cheat.GiveMatsonCAFS()
Starting Sniper Rifle D220 R300: Cheat.GiveMAXatron()
Starting Rocket Launcher D1250 R100: Cheat.GiveGLDragoon()
Green machine sniper D90 R400: Cheat.GiveTAINitron()
Uzi D40 R150: Cheat.GiveC9A5()
Silenced Uzi D35 R200: Cheat.GiveC9S()
Shotgun D350 R150: Cheat.GiveNoNFrager()
Zoomable Sniper 4X zoom D90 R750: Cheat.GiveMatsonACC()
Zoomable 50cal Sniper 8X zoom D220 R900: Cheat.GiveOCICrom()