Find 60 treasures

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

Defeat 70 enemies with the FAL

Find the Strange Relic

Defeat 50 enemies with hand-to-hand combat

Find all 60 treasures

Kill 50 enemies in a row without dying

Finish the game in Hard Mode

Finish the game in Easy Mode

Kill 30 enemies with the Dragon Sniper

Kill 50 enemies with the M4

Kill 20 enemies by shooting from the hip (without aiming with the L1 button)

Find 50 treasures