Art gallery
At the Cheats menu, press B, A, White, Black, B, A to unlock art gallery.
Infinite ammunition
At the Cheats menu, press Black, White, B, White, A, Black.
Level select
At the Cheats menu, press White, Black, White, Black, L, R to unlock all levels.
Movie gallery
At the Cheats menu, press L(2), B, A, L, R to unlock movie gallery.
Unlockables
After completing the game, turn cheats on in the Extra menu.
Battering Ram - Complete game with Professional ranking
Bulletproof - Complete game with Professional ranking
Time Out - Complete game with Career Criminal ranking
Fully Loaded - Complete game with Psychopath ranking
Art gallery...