Achieve a D rank or higher on any episode.

Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.

Make the final assault.

Defeat an old adversary.

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

Call down an orbital strike.

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

Sabotage a dreadnought.

Discover an enemy's monstrous origin.

Kill 100 enemies with melee attacks.

Explore a lost city.

Defeat a Harvester.

Survive the swarm.