Reach x50 Combo in the Main Story

Find the Black Mask

Defeat 20 enemies by shooting from the hip (without aiming with L1/R1)

Defeat 30 enemies in a row with your side arm

Finish the game in Hard Mode

Finish the game in Easy Mode

Find all 100 treasures

Kill 10 enemies with thrown-back grenades

Find 80 treasures

Defeat five enemies in a row with headshots

Play in the swimming pool on the Cruise Ship

Defeat 20 enemies by blind-firing while in cover (without aiming with L1/R1)

Find 60 treasures