Perform 30 headshot kills with any weapon on humanoid targets

Gain the loyalty of the krogan

Gain the loyalty of the biotic Convict

Fully upgrade a Weapon

Complete the investigation of a derelict alien vessel

Gain the loyalty of the Cerberus Officer

Complete a mission discovered by scanning an unexplored world

Visit 100% of the planets in an unexplored cluster

Kill 25 enemies firing the Auger through an object

Fully upgrade one weapon in Campaign Mode

Defeat the Brawler in the Post Office in under 2 minutes

Get 50 headshot kills in Campaign Mode

Use the Atomizer secondary fire to kill 30 enemies