Cheat mode

Pause the game and hold L + R + Triangle + Left to display the cheat code entry screen. Then, enter one of the following codes to activate the corresponding cheat function. If you entered the code correctly, a message will appear.
Invincible officers

Press Triangle, Up, Right(3), Left(3).
Invincible player

Press Square, Up, Down(2), X, Left, Up, Down.
Invincible civilians

Press Up(3), Left, Down, Up(2), Right.
All weapons

Press X, Square, Triangle, X, Square, Triangle, Left, Right.
Infinite ammunition

Press Square(2), Triangle(2), Left, Right, X(2).
Player and officers fully promoted

Press Square(2), Triangle, Up(2), Down(2), Square.
Player invisible to others

Press Right, Left, Right, Left, Down, Up, Right, Left.
All characters visible

Press Left, Square, Up, Triangle, Down, X, Right(2).
Stop active timer

Press Square, Triangle, Left, Up, Down, X(2), Down.
Sounds not heard

Press Up, Down(2), Left, Up, Down(3).
Remixed credits

Press Up, Right, Left, Right, X, Right, X, Right.