Kill 10 enemies during one use of Bullet Time.
Complete the End Combat.
Complete the game in Hard-Boiled mode.
Finish the game quicker than the par time of 56 minutes in New York Minute mode.
Kill four enemies with one thrown grenade.
Snipe 10 consecutive enemies without missing a shot.
Complete Part III on any difficulty.
Complete Part II on any difficulty.
Complete Part I on any difficulty.
Kill two enemies during one Shoot Dodge.
Locate the Secret Room during the Tutorial.