Enter these cheats at the cheat menu, in the game the codes shall be 
automatically connected. A message will confirm correct code entry. 

God mode: NOPAINNOCANE 
Level select: COOLLEVELCHEATCODE 
Skip level: YESTERDAYYOURZEBRADIE 
Full map: YESTERDAYYOURZEBRADIVORCED 
Unlock doors: ANYANDALLCODE 
Restore health: CANEREADYTOROCK 
Unlimited ammo: FISHINABARREL 
All weapons: CHARLIEHUSTLEOVERDRESSEDROMEO 
Level up weapons: FRIENDLIESTGODINGALAXY 
Big feet mode: DEADREDPARTYSHOES 
Big head mode: BUTTCHEATCANSURPRISE 
Enemies thwarted or frozen: CHARLIEOSCARLIMADELTA 
Time factor: CHARLIEALPHANOVEMBERECHO 
Programmer message: GOODGODHELPME