Various cheats
     Type  codes after level starts and press Enter. You must re-enter
codes with each level...

Cheat code:             Effect:
cole                    God Mode & all weapons
invincible              God Mode
lukaszuk                All weapons
rayl                    God Mode
snellings               Full health
trevor                  Full ammo for all weapons
vincent                 Change to gray
blue                    Change to blue
sage                    Change to green
avacado                 Change to light green
ochre                   Change to brown