Go to the main menu and press L, R, L, R, L, R, L, R.
Bullets Explode
Go to the main menu and press L, R, Z, Y, B.
Enemies Punched Are Set On Fire
Go to the main menu and press B, Y, L, L.
Get Big Head Mode
Go to the main menu and press R, R, L, R.
Get Liquid metal Mode
Go to the main menu and press B, Y, X, B, Y, X.
Make Enemies Slower
Go to the main menu and press B, X, Y, Z, L, R.
Pick Level
Go to the main menu and press X, Y, Z, Z, X, Y, Z, Z.
Start with two revolvers on Level 1
For this cheat to work the cheat:kamikazie(bullets blow up) must be enabled! Talk to Al and keep doing so umtill the other officer says: sir,were in. Then stand in the doorway of the entrence to the building face to the outside an shoot the guy on you right, you will not fail the mission, and then walk over to his dead body and pick up his gun. At last you have a revolver! Now you have two !