While playing, hit backspace and type: "!throw me a frickin bone 
here" to enable cheat mode. You may now hit backspace and type 
any of the other codes:

Code                               Result 
!captain scarlet               God Mode 
!full monty                       God Mode Plus Items 
!stay frosty                     Give Sarge a ForceField 
!henry                             Gives 30 Insecticide Spray 
!harsh language             Gives 20 Fly Swatters 
!here's a lockpick...         Give Unlimited Flame Napalm 
!mib                                 Give Sarge a Laser Rifle 
!this one goes to eleven Gives 3 Napalm Strikes 
!scotty                            Give 3 SpaceMen Renforcements 
!hey stifler                      Give Unlimited Glue 
!one time...                     Give 3 Baseballs 
!spiny norman                Give 3 HammerMines 
!let me down                  Drops Sarges Health to almost 0 
!pump me up                   Give Sarge a Steriods Boost 
!rate me                          Show FPS 
!roody-pooh Give           Unlimited Air Attacks 
!the meek                        Lose Scenario 
!cut to the chase            Win Scenario 
!halloween                     Changes the Enemy Troops Into 
Zombies 
!time for bed                  Lose Scenario 
!mona lisa                       Gives Random Item 
!florence                        Gives Unlimited MediKit 
!johnny ricco                  Gives 3 Paratroopers 
!peep show                   Gives 3 Recons 
!heavenly glory              Gives 3 AirStrikes 
!yippee!!!                         Gives A Sniper Rifle 
!penny                            Gives Unlimited M80's 
!hey dante                     Unlimited Aerosol 
!the sun                         Unlimited Magnifying Glass 
!whistle and flute          Give Sarge a Flak-Jacket 
!i woke up this morning Gives 9 Blue Disguise 
!no sunblock                  Gives 9 Tan Disguise 
!incognito                       Gives 9 Grey Disguise 
!i got two words for ya... Gives A MineSweeper 
!haunt haunt haunt!        Gives 10 Explosives 
!sprinkles                        Gives 30 Mines 
!i like to keep this handy Gives Unlimited Bazooka 
!patty melt                      Gives Unlimited FlameThrower 
!you want some            Gives Unlimited Grenades 
!disco inferno                Sets Sarge on fire (But Doesnt 
Hurt Him) 
!disco is dead                Extinguishes Sarge's Fire 
!no one expects            Summons a Horde Of Enemy Troops 
!italian job                      Sets Off A Huge Explosion 
Around Your Sarge 
!its dark Hides               All Enemy Troops on Mini-Map 
!door Teleports             Sarge to Cursor Location