Defeat 30 enemies with the M9

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

Defeat 30 enemies with the Tau Sniper

Defeat 50 enemies with stealth attacks

Find 20 treasures

Successfully counter all of a Brute’s damage-giving attacks

Defeat 50 enemies with hand-to-hand combat

Defeat five enemies in a row with headshots

Defeat 20 enemies with headshots

Find one treasure

Defeat the Moon.

Kill 30 Soldiers with head shots.