Perform any combination of 50 biotic combos or tech bursts.

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

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

Extract ancient technology.

Call down an orbital strike.

Disable a group of fighter squadrons.

Complete three multiplayer matches or five N7 missions.

Discover an enemy's monstrous origin.

Establish or rekindle a romantic relationship.

Hijack an Atlas mech.

Survive the swarm.

Defeat a Harvester.