Lift 100 enemies off the ground with powers.

Establish or rekindle a romantic relationship.

Evacuate a scientific facility.

Reach level 15 in multiplayer or level 50 in single-player.

Defeat a Harvester.

Set 100 enemies on fire with powers.

Find the Talon leader.

Complete one multiplayer match or two N7 missions.

Survive the swarm.

Destroy an Atlas dropped from orbit.

Modify a weapon.

Bring a veteran officer aboard.