8 Pain Killer Pills 

During gameplay. press pause then enter the following:press L1, L2, R2, R1, Triangle, Circle, X, Square. 

All weapons and full ammunition 

During gameplay. press pause then enter the following:press L1, L2, R1, R2, Triangle, Circle, X, Square.

Extra Difficulty modes

Beat the game to unlock "Fugitive", "Dead On Arrival" and "The New York Minute" difficulty settings. 

Invincibility 

During gameplay. press pause then enter the following:press L1(2), L2(2), R1(2), R2(2), you may need to reenter this code after an autosave

Level select 

Play the game and complete Subway A1, then return to the main menu. Press Up, Down, Left, Right, Up, Left, Down, Circle.