Gain the loyalty of Archangel

Complete the investigation of a derelict alien vessel

Thresher Maw defeated

Successfully recruit the Quarian

Gain the loyalty of the Cerberus Operative

Collect all unique dolls in the Royal Train Station.

Earn at least 3 stars in each of the mixes in the Tiësto Megamix (in Quickplay, Megamixes, Empire or Star Battle).

Successfully recruit the biotic Convict

Evolve any power

Perform 30 headshot kills with any weapon on humanoid targets

Visit 100% of the planets in an unexplored cluster

Complete a mission discovered by scanning an unexplored world

Complete any research project in the Normandy's laboratory