Find 50 treasures

Defeat 50 enemies with the M32 - Hammer

Defeat 250 enemies with headshots

Defeat 70 enemies with the FAL

Find 40 treasures

Defeat 50 enemies with stealth attacks

Find the Strange Relic

Finish the game in Easy Mode

Defeat 20 enemies with gunfire by aiming while hanging

Defeat 20 enemies with a single punch, after softening them up with gunfire

Defeat 70 enemies with the M4

Defeat ten enemies in a row with hand-to-hand combat