Max Payne 2: The Fall of Max Payne cheats and cheat codes for Playstation 2

Cheats
During a gameplay, press Square, Square, X, Left, Right, Left, 
Right, Square, Square, Square, X, Left, Right, Left, Right. 
After, press Start + Select to go back to the main menu.
Choose the "New Game" option. 
All game modes and stages should be unlocked. 

Unlock Hard Boiled, New York Minute, and Dead Man Walking modes
Finish the game once in Detective mode 

Unlock Dead On Arrival mode:
Finish the game on the "Hard-Boiled" mode

View Special ending
Finish the game in Dead On Arrival mode

Unlimited life:
Press L1, L1, L2, L2, R1, R1, R2, R2 at the start of each level.

Part 1, Chapter 6: Kung Fu poster: 
Go through the fun house until you reach Mona's hideout. Once inside, 
look around Mona's gym area and should find a poster of the famous 
Max Payne Mod "Kung Fu" 
by Kenneth Yeung. 

In-game reset:
Press Start + Select during game play. 

Restore health:
Save during game play, then return to the main menu. 
Load the game and you will have full health when you resume.