Max Payne
Play through the game normally until completing Subway A1 and reach Chapter 2: One Way Or The Other. Pause the game and press Select to return to the main menu. Then at the main menu, press Up, Down, Left, Right, Up, Left, Down, Circle. Select the "Load level" option. Note: If playing without a memory card, select "Continue". All levels will now be unlocked.
Pause the game and press L1(2), L2(2), R1(2), R2(2), Triangle, Circle, X, Square. Note: This code may need to be re-enabled after an auto-save. -From: gabrial_mcbride@hotmail.com and billdogg0@hotmail.com
Pause the game and press L1, L2, R1, R2, Triangle, Circle, X, Square. Note: This also gives you eight pain killer pills. -From: gabrial_mcbride@hotmail.com and sting@nobleknights.com
Pause the game and press L1, L2, R1, R2, Triangle, X(2), Triangle. Repeat this code to disable its effect.
Pause the game and press L1, L2, R1, R2, Triangle, Square, X, Circle.
Successfully complete the game on the "Fugitive" difficulty setting to unlock the "Dead On Arrival" and "The New York Minute" difficulty settings.
Successfully complete the game on the "Dead On Arrival" difficulty setting.
Successfully complete the Last Challenge bonus level. The doors in the back of the room will open up to the Remedy Room.