While playing, press [~] to bring up the console, then type any of the following codes:
Code - Result:
GIFTFROMPTERODON - Enable Cheat Mode
CHTHEAL - Restore Health
CHTHEALTEAM - Restore Health for Team
CHTWEAP # - Get Weapon # (0-30)
CHTAMMO - Refill Ammo
CHTGRENADES - Get Grenades
CHTALLQF - Access Quickfights
CHT3PV (0/1) - 3rd Person View
SHOWFPS (0/1) - Show FPS
SHOWPROF (0/1) - Show Stats
CHTCANNIBALS - Unknown Effect
CHTKOSTEJ - Unknown Effect