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

Unlocked: 10 Mar 2012 09:23:55

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

Unlocked: 10 Mar 2012 09:12:32

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

Unlocked: 09 Mar 2012 17:35:14

Mission accomplished.

Unlocked: 09 Mar 2012 17:35:13

Make the final assault.

Unlocked: 09 Mar 2012 17:14:48

Defeat an old adversary.

Unlocked: 09 Mar 2012 12:56:52

Send a warning across the galaxy.

Unlocked: 08 Mar 2012 19:08:10

Kill 1,000 enemies.

Unlocked: 08 Mar 2012 18:48:09

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

Unlocked: 08 Mar 2012 18:30:23

Extract ancient technology.

Unlocked: 08 Mar 2012 17:55:36

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

Unlocked: 08 Mar 2012 17:34:04

Complete three multiplayer matches or five N7 missions.

Unlocked: 08 Mar 2012 17:13:39

Evacuate a scientific facility.

Unlocked: 08 Mar 2012 07:59:55

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

Unlocked: 08 Mar 2012 07:27:10

Call down an orbital strike.

Unlocked: 07 Mar 2012 15:23:07

Disable a group of fighter squadrons.

Unlocked: 07 Mar 2012 14:15:06

Sabotage a dreadnought.

Unlocked: 06 Mar 2012 20:39:30

Establish or rekindle a romantic relationship.

Unlocked: 06 Mar 2012 19:52:11

Discover an enemy's monstrous origin.

Unlocked: 06 Mar 2012 19:33:36

Win a political stand-off.

Unlocked: 06 Mar 2012 16:15:42

Modify a weapon.

Unlocked: 06 Mar 2012 15:50:23

Explore a lost city.

Unlocked: 06 Mar 2012 14:54:49

Defeat a harvester.

Unlocked: 06 Mar 2012 10:51:35

Escape a Reaper in the galaxy map.

Unlocked: 05 Mar 2012 13:11:26

Complete one multiplayer match or two N7 missions.

Unlocked: 05 Mar 2012 13:04:00

Bring a veteran officer aboard.

Unlocked: 03 Mar 2012 19:36:53

Kill a brute while it's charging you.

Unlocked: 03 Mar 2012 19:23:55

Set 100 enemies on fire with powers.

Unlocked: 03 Mar 2012 19:13:47

Visit a store in the single-player campaign.

Unlocked: 03 Mar 2012 17:57:55

Chase down an assassin.

Unlocked: 03 Mar 2012 17:44:39

Evolve any of your powers to rank 6.

Unlocked: 03 Mar 2012 17:01:53

Return to active duty.

Unlocked: 03 Mar 2012 15:28:52

Destroy an Atlas dropped from orbit.

Unlocked: Offline

Survive the swarm.

Unlocked: Offline

Stop a Cerberus kidnapping.

Unlocked: Offline

Kill 250 enemies.

Unlocked: Offline

Deliver most of the Galaxy at War assets to the final conflict.

Finish the game on Insanity without changing difficulty after leaving Earth.

Perform any combination of 50 biotic combos or tech bursts.

Kill 5,000 enemies.

Kill 100 enemies with melee attacks.

Attain the highest level of readiness in each theater of war.

Overload the shields of 100 enemies.

Lift 100 enemies off the ground with powers.

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

Hijack an Atlas mech.

Obtain two non-customizable suits of armor.

Upgrade any weapon to level 10.

Reach level 20 in multiplayer or level 60 in single-player.

Finish all multiplayer maps on Gold or all single-player missions on Insanity.

Find all required intel to help Eden Prime's colonists.

Learn more about the Prothean Empire.

Investigate a sinister conspiracy.

Uncover an ancient secret.

Use clues to pinpoint the exact location of an objective.

Rescue a civilian from Reaper forces.

Free Omega from Cerberus Occupation.

Find the Talon leader.

Complete all the Command Center side-missions on Omega.

Discover a plot against you.

Go undercover to follow a lead.

Infiltrate an enemy stronghold with your crew.

Stop an out-of-control scheme before it's too late.

Throw a party for your friends.

Win a prize at one of the arcade games.

Investigate a strange occurrence in the combat simulator.

Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.

Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.