Max Out Health, Armor & Ammo and Get Cash
During gameplay press R1, R2, L1, X, Left, Down, Right, Up, Left, Down, Right, Up

Get All Weapons 1
R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Right, Up

Get All Weapons 2
During gameplay press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Down, Left

Get All Weapons 3
During gameplay press R1, R2, L1, R2, Left, Down, Right, Up, Left, Down, Down, Down

Raise Your Wanted Level
During gameplay press R1, R1, Circle, R2, Left, Right, Left, Right, Left, Right

Lower Your Wanted Level
During gameplay press R1, R1, Circle, R2, Up, Down, Up, Down, Up, Down