Successfully recruit the biotic Convict

Gain the loyalty of the thief

Complete any research project in the Normandy's laboratory

Make 20 enemies scream as they fall or are set on fire

Perform 30 headshot kills with any weapon on humanoid targets

Retrieve mineral resources by scanning and probing a planet in the galaxy map

Return to active duty

Save your crew from an overwhelming attack

Finish the game in Crushing Mode

Defeat ten enemies in a row with a single punch, after softening them up with gunfire

Defeat 200 enemies with the GAU - 19

Find 80 treasures