Eliminate a car in the Warehouse District Warfare level.

Complete level 1, Arena Duel.

ME3: Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.

ME3: Deliver most of the Galaxy at War assets to the final conflict.

ME3: Send a warning across the galaxy.

ME3: Overload the shields of 100 enemies.

ME3: Obtain two non-customizable suits of armor.

ME3: Dispatch 10 probes to retrieve people or resources in Reaper territory.

ME3: Disable a group of fighter squadrons.

ME3: Free Omega from Cerberus Occupation.

ME3: Kill 10 guardians with headshots from the front while their shields are raised.

ME3: Evacuate a scientific facility.

ME3: Hijack an Atlas mech.