ME2: Successfully recruit Archangel

Link up with the resistance.

Pick up 250 loot supplies.

ME2: Complete any research project in the Normandy's laboratory

ME2: Hit 20 different targets with multiple biotic powers to combine the effects

ME2: Gain the loyalty of the thief

ME2: Unlock 15 new Mass Effect 2 codex entries

ME2: Return to active duty

ME1: Complete the game on any difficulty

Establish a romantic relationship in Mass Effect 1, 2 or 3

Complete a mission with co-op player.

ME1: Use Damping Field 25 times