- Insanity
Finish the game on Insanity without changing difficulty after leaving Earth.
18 March 2012 - 13 guides
- Unwavering
Finish all multiplayer maps on Gold or all single-player missions on Insanity.
18 March 2012 - 7 guides
- Veteran
Kill 5,000 enemies.
18 March 2012 - 7 guides
- Master and Commander
Deliver most of the Galaxy at War assets to the final conflict.
18 March 2012 - 12 guides
- Gunsmith
Upgrade any weapon to level 10.
17 March 2012 - 4 guides
- Defender
Attain the highest level of readiness in each theater of war.
17 March 2012 - 6 guides
- Peak Condition
Reach level 20 in multiplayer or level 60 in single-player.
16 March 2012 - 3 guides
- Overload Specialist
Overload the shields of 100 enemies.
15 March 2012 - 3 guides
- Hijacker
Hijack an Atlas mech.
11 March 2012 - 9 guides
- Battle Scarred
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
- Legend
Mission accomplished.
10 March 2012 - 3 guides
- Long Service Medal
Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.
- Patriot
Make the final assault.
- Executioner
Defeat an old adversary.
10 March 2012 - 2 guides
- Sky High
Lift 100 enemies off the ground with powers.
10 March 2012 - 4 guides
- Tour of Duty
Finish all multiplayer maps or all N7 missions in single-player.
10 March 2012 - 2 guides
- Explorer
Complete three multiplayer matches or five N7 missions.
- Problem Solver
Evacuate a scientific facility.
10 March 2012 - 2 guides
- Well Connected
Send a warning across the galaxy.
10 March 2012 - 2 guides
- Pyromaniac
Set 100 enemies on fire with powers.
10 March 2012 - 6 guides
- Last Witness
Extract ancient technology.
10 March 2012 - 2 guides
- Almost There
Reach level 15 in multiplayer or level 50 in single-player.
- Paramour
Establish or rekindle a romantic relationship.
- Always Prepared
Obtain two non-customizable suits of armor.
10 March 2012 - 2 guides
- Tourist
Complete one multiplayer match or two N7 missions.
- Lost and Found
Dispatch 10 probes to retrieve people or resources in Reaper territory.
10 March 2012 - 4 guides
- Bruiser
Kill 100 enemies with melee attacks.
10 March 2012 - 3 guides
- Combined Arms
Perform any combination of 50 biotic combos or tech bursts.
10 March 2012 - 6 guides
- Soldier
Kill 1,000 enemies.
- Hard Target
Call down an orbital strike.
10 March 2012 - 2 guides
- Saboteur
Disable a group of fighter squadrons.
- Party Crasher
Sabotage a dreadnought.
- Fact Finder
Discover an enemy's monstrous origin.
- Enlisted
Start a character in multiplayer or customize a character in single-player.
09 March 2012 - 2 guides
- Arbiter
Win a political stand-off.
- Mail Slot
Kill 10 guardians with headshots from the front while their shields are raised.
09 March 2012 - 7 guides
- Giant Killer
Defeat a harvester.
- Pathfinder
Explore a lost city.
- Untouchable
Escape a Reaper in the galaxy map.
09 March 2012 - 3 guides
- Liberator
Stop a Cerberus kidnapping.
09 March 2012 - 2 guides
- Tunnel Rat
Survive the swarm.
- Recruit
Kill 250 enemies.
09 March 2012 - 2 guides
- World Shaker
Destroy an Atlas dropped from orbit.
- Mobilizer
Bring a veteran officer aboard.
- Eye of the Hurricane
Kill a brute while it's charging you.
08 March 2012 - 6 guides
- Shopaholic
Visit a store in the single-player campaign.
08 March 2012 - 2 guides
- Bringer of War
Chase down an assassin.
08 March 2012 - 2 guides
- A Personal Touch
Modify a weapon.
08 March 2012 - 3 guides
- Driven
Return to active duty.
- Focused
Evolve any of your powers to rank 6.
08 March 2012 - 3 guides
- Technical Issues
Investigate a strange occurrence in the combat simulator.
16 November 2014 - 3 guides
- Simulated Hero
Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.
16 November 2014 - 2 guides
- The One and Only
Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.
16 November 2014 - 2 guides
- Perfect Host
Throw a party for your friends.
16 November 2014 - 2 guides
- King of the Castle
Win a prize at one of the arcade games.
16 November 2014 - 2 guides
- Last Resort
Stop an out-of-control scheme before it's too late.
- Team Player
Infiltrate an enemy stronghold with your crew.
16 November 2014 - 2 guides
- High Society
Go undercover to follow a lead.
- Priority Target
Discover a plot against you.