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

Unlocked: 10 Sep 2014 20:30:18

Obtain two non-customizable suits of armor.

Unlocked: 21 Feb 2014 03:11:12

Win a political stand-off.

Unlocked: 21 Feb 2014 02:55:43

Explore a lost city.

Unlocked: 21 Feb 2014 01:07:15

Survive the swarm.

Unlocked: 20 Feb 2014 23:57:51

Defeat a harvester.

Unlocked: 20 Feb 2014 22:30:34

Stop a Cerberus kidnapping.

Unlocked: 20 Feb 2014 19:15:49

Kill 5,000 enemies.

Unlocked: 14 Mar 2013 15:30:49

Destroy an Atlas dropped from orbit.

Unlocked: 16 Aug 2012 20:35:34

Escape a Reaper in the galaxy map.

Unlocked: 16 Aug 2012 05:01:31

Bring a veteran officer aboard.

Unlocked: 15 Aug 2012 20:55:37

Kill 100 enemies with melee attacks.

Unlocked: 13 Aug 2012 06:59:25

Upgrade any weapon to level 10.

Unlocked: 13 Aug 2012 06:34:24

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

Unlocked: 12 Aug 2012 22:50:21

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

Unlocked: 12 Aug 2012 22:29:17

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

Unlocked: 11 Aug 2012 09:27:14

Kill a brute while it's charging you.

Unlocked: 11 Aug 2012 01:57:07

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

Unlocked: 11 Aug 2012 00:35:14

Kill 1,000 enemies.

Unlocked: 10 Aug 2012 17:49:54

Set 100 enemies on fire with powers.

Unlocked: 10 Aug 2012 17:45:38

Perform any combination of 50 biotic combos or tech bursts.

Unlocked: 05 Aug 2012 22:42:13

Overload the shields of 100 enemies.

Unlocked: 05 Aug 2012 22:39:56

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

Unlocked: 05 Aug 2012 16:18:36

Visit a store in the single-player campaign.

Unlocked: 03 Aug 2012 17:35:44

Chase down an assassin.

Unlocked: 03 Aug 2012 17:23:59

Return to active duty.

Unlocked: 03 Aug 2012 16:35:30

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

Unlocked: 03 Aug 2012 16:03:13

Lift 100 enemies off the ground with powers.

Unlocked: 03 Aug 2012 15:51:53

Complete three multiplayer matches or five N7 missions.

Unlocked: 03 Aug 2012 06:53:57

Evolve any of your powers to rank 6.

Unlocked: 03 Aug 2012 06:35:23

Kill 250 enemies.

Unlocked: 03 Aug 2012 05:40:17

Complete one multiplayer match or two N7 missions.

Unlocked: 03 Aug 2012 05:29:38

Modify a weapon.

Unlocked: 02 Aug 2012 22:22:17

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

Unlocked: 02 Aug 2012 22:19:12

Sabotage a dreadnought.

Unlocked: Offline

Call down an orbital strike.

Unlocked: Offline

Disable a group of fighter squadrons.

Unlocked: Offline

Extract ancient technology.

Unlocked: Offline

Defeat an old adversary.

Unlocked: Offline

Send a warning across the galaxy.

Unlocked: Offline

Discover an enemy's monstrous origin.

Unlocked: Offline

Evacuate a scientific facility.

Unlocked: Offline

Make the final assault.

Unlocked: Offline

Mission accomplished.

Unlocked: Offline

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

Unlocked: Offline

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

Unlocked: Offline

Establish or rekindle a romantic relationship.

Unlocked: Offline

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

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

Hijack an Atlas mech.

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.