Perform any combination of 50 biotic combos or tech bursts.

Sabotage a dreadnought.

Win a political stand-off.

Defeat a Harvester.

Survive the swarm.

Destroy an Atlas dropped from orbit.

Escape a Reaper in the galaxy map.

Kill 100 enemies with melee attacks.

Kill a brute while it's charging you.

Visit a store in the single-player campaign.

Chase down an assassin.

Modify a weapon.

Start a character in multiplayer or customize a character in single-player.