Complete the game on any difficulty to unlock Mercenaries Mode, Infinite Ammo option, New Game+ mode, History of Resident Evil, Sheva Alomar, Chris's Safari alternate costume, and Sheva's Clubbin alternate costume.

Perform the corresponding tasks to unlock the following bonuses:

BONUS - HOW TO UNLOCK
Classic Horror Filter - Complete the game on amateur difficulty.
Retro Filter - Complete the game on normal difficulty.
Professional Difficulty and "Noise Filter" - Complete the game on veteran difficulty.
Unlock Rocket Launcher w/ Infinite Ammo - Complete the game in under 5 hours on any difficulty. Then, enable it at the "Bonus Features" menu.