Max Payne Cheats (GameBoy Advance)

Successfully complete the game to unlock the "Super Cop", "Infinite Ammo", and "All
Weapons" options the cheats menu.

Collect some pain killers within a level, and then choose to quit the game via the menu.
When you return to the Main Menu, choose "Continue Game." When you restart the level
you'll begin with the same amount of pain killers as you had before quitting. Re-collect
the pain killers in that level to augment your supply.

Note: Only tested on the "Fear that Gives Men Wings" level.