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

Defeat 50 enemies with stealth attacks

Finish the game in Easy Mode

Finish the game in Hard Mode

Defeat 70 enemies with the M4

Defeat 50 enemies with the 92FS - 9mm

Defeat 20 enemies with gunfire by aiming while hanging

Defeat 50 enemies with hand-to-hand combat

Defeat three enemies with one explosion

Find the Strange Relic

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

Shoot off 100 Helghast helmets during battle