Extra Uzi After you enter the warehouse you will see a little cubicle with the TV inside. Go to the right and climb on top of the boxes then jump across and you will find an Uzi.
Extra Pain Killers After you start the game,turn around and open the middle locker. Inside you will find two bottles of pain killers.
Mad policemen When you see Max suspended inside the police station, go into the rec-room. You will see two policemen sitting on a couch watching television. Shut off the television. The policemen will make comments to Max and will get very mad at him but will not do anything.
Cheat mode Press Square(2), X, Left, Right, Left, Right, Square(3), X, Left, Right, Left, Right as you are playing. Now, press Start + Select to return to the main menu. Select the "New Game" option. This will unlock all levels and game modes. ***You can't disable this code.
Special ending If you want to view a special ending just complete the game in Dead On Arrival mode.
Apartment memorial When you in the level where you have to find a member of the inner circle in a fancy apartment complex, go to the part where you see two cleaners outside the window on the lift. Kill both of them. Jump down from ledge to ledge until you reach the bottom. Run along the edge of the building until you hear a shotgun blast from inside and see someone flying out of a window. Kill the cleaner in his apartment but don't go in. Keep going along the building's edge for a little longer and you will see an open window with a memorial inside for someone.
Kung Fu poster in Part 1, Chapter 6 Go through the fun house until you see Mona's hideout. Go inside and look around Mona's gym area. You should find a poster by Kenneth Yeung of the famous Max Payne Mod "Kung Fu"
Wall sparks You need to find a flat-screen television on any of the levels where you are in the fancy apartments with the cleaners. Take out your shotgun and shoot the television,blowing it off the wall like a painting. There should be smoke coming from the wall where the TV was located. Walk up to the smoke. Press the Square and it will make sparks on the wall like the television was still there.
Theme song You need to play the piano with the dead body on top of it. Max will attempt to play his theme song.
Vlad When the battle starts you need to equip your MP5 and enter the scope mode. Look above Vlad's location and you will see 4 cylinder-like wooden pipes holding the sitting-place. This is the square-like place that Vlad is on. Shoot the pipes and they will fall. Remember to dodge Vlad's dynamite. After you shoot the last pipe, the sitting-place will fall down but Vlad is still out of your view. Look up again and you will see four more wooden pipes that are preventing a large pillar from falling down. Shoot the pipes out and the pillar will fall down. Vlad will move aside to avoid the pillar. Now Vlad is in your view. Equip any desired weapon and finish him off. I recommend the M4 Carbine *** Watch out for Vlad's molotov burning bombs.
Difficulty Modes If you want to unlock the Hard Boiled, New York Minute, and Dead Man Walking modes you need to complete the game on the "Detective" difficulty setting. If you want to unlock Dead On Arrival mode complete the game on the "Hard-Boiled" difficulty setting.