During play, press Backspace and type !throw me a frickin bone here. Now press
Backspace and enter the following codes:

!captain scarlet                God mode   
!full monty                     God mode and all items   
!its dark                       Hide all enemy troops on mini-map  
!italian job                    Big explosion around Sarge   
!cut to the chase               Win scenario  
!the meek                       Lose scenario
!door                           Teleport Sarge
!rate me                        Display frame rate   
!let me down                    Sarge's health to almost 0   
!halloween                      Enemy troops are zombies   
!disco is dead                  Put out Sarge's fire   
!haunt haunt haunt!             10 Explosives  
!harsh language                 20 Fly Swatters 
!heavenly glory                 3 AirStrikes 
!one time...                    3 Baseballs 
!spiny norman                   3 HammerMines   
!this one goes to eleven        3 Napalm Strikes   
!johnny ricco                   3 Paratroopers 
!peep show                      3 Recons 
!scotty                         3 SpaceMen Reinforcements   
!henry                          30 Insecticide Spray   
!sprinkles                      30 Mines   
!i woke up this morning         9 Blue Disguise 
!incognito                      9 Grey Disguise
!no sunblock                    9 Tan Disguise   
!oh behave                      Freeze enemies
!mojo                           Unfreeze enemies 



Hints 

More Damage in Multiplayer: 
When using the flamethrower in two player mode, tap the X button instead of holding it.
The flamethrower will then do more damage.