Upgrade a Weapon

Acquire the Pepper Grinder

Complete Vale of Tears

Complete 10 quests.

Promote a multiplayer character to the Galaxy at War or import an ME3 character.

Defeat a Harvester.

Sabotage a dreadnought.

Call down an orbital strike.

Kill 1,000 enemies.

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

Extract ancient technology.

Establish or rekindle a romantic relationship.

Kill a brute while it's charging you.