Defeat 100 enemies with headshots

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

Defeat 30 enemies with the Mk-NDI

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

Defeat 30 enemies with the KAL 7

Make five enemies drop their grenade by shooting them

Defeat 50 enemies with hand-to-hand combat

Defeat 20 enemies with hand-to-hand combat

Finish the game in Easy Mode

Defeat 50 enemies with stealth attacks

Defeat 70 enemies with the M4

Defeat 100 enemies with headshots