Gain the loyalty of the krogan

Gain the loyalty of the Professor

Complete the investigation of a derelict alien vessel

Complete a mission discovered by scanning an unexplored world

Successfully recruit the Assassin

Visit 100% of the planets in an unexplored cluster

Gain the loyalty of the thief

Complete any research project in the Normandy's laboratory

Successfully recruit the biotic Convict

Perform 30 headshot kills with any weapon on humanoid targets

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

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

Return to active duty