Assist the evacuation at Bryant Park

Assist the Marines in Madison Square

Infiltrate the alien hive

Complete 3 PlayStation®Network matches

Find Nathan Gould

Escape the Battery Park evacuation center

Complete In at the Deep End

Complete chapter 3 in the Single Player Campaign

Complete chapter 1 in the Single Player Campaign without dying or restarting a checkpoint

Beat the Challenge of Olympus

Create a combo weapon

Complete the game on any difficulty setting

Destroy the Marker