Press ~ during game play to display the console window. Then, enter one of the following codes to activate the corresponding cheat function.

Effect - Code

Flight mode - i can fly
End current campaign match - resetgames
Extra enemies - hitmewithyourbestshot
Increase brightness - sky
Increase game speed - turbo
Maximum ammo - takeittothelimit
Player invincibility - iwillsurvive
Stage select - letmego
Target no target mode - closetoyou