Complete one Cooperative Multiplayer game

Defeat 50 enemies with stealth attacks

Defeat ten enemies using hand-to-hand combat on the back of the convoy trucks

Defeat five enemies in a row with headshots

Find 40 treasures

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

Defeat 30 enemies with the Mk-NDI

Find 20 treasures

Make five enemies drop their grenade by shooting them

Defeat five enemies in a row using stealth attacks

Defeat 20 enemies with hand-to-hand combat

Ring Bell of Awakening at Undead Church.