Defeat an old adversary.

Finish all multiplayer maps or all N7 missions in single-player.

Survive the swarm.

Perform any combination of 50 biotic combos or tech bursts.

Lift 100 enemies off the ground with powers.

Complete three multiplayer matches or five N7 missions.

Sabotage a dreadnought.

Dispatch 10 probes to retrieve people or resources in Reaper territory.

Evacuate a scientific facility.

Escape a Reaper in the galaxy map.

Kill a brute while it's charging you.

Kill 10 guardians with headshots from the front while their shields are raised.