Defeat 20 enemies with gunfire by aiming while hanging

Finish the game in Easy Mode

Defeat 50 enemies with stealth attacks

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

Defeat 50 enemies with hand-to-hand combat

Defeat 70 enemies with the FAL

Defeat 20 enemies with headshots

Defeat 20 enemies with hand-to-hand combat