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Insanity
Finish the game on Insanity without changing difficulty after leaving Earth.
75 
Legend
Mission accomplished.
50 
Master and Commander
Deliver most of the Galaxy at War assets to the final conflict.
50 
Long Service Medal
Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.
50 
Unwavering
Finish all multiplayer maps on Gold or all single-player missions on Insanity.
50 
Under Pressure
Uncover an ancient secret.
50 
Talon
Find the Talon leader.
50 
Meticulous
Complete all the Command Center side-missions on Omega.
50 
Last Resort
Stop an out-of-control scheme before it's too late.
50 
The One and Only
Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.
50 
Arbiter
Win a political stand-off.
25 
Last Witness
Extract ancient technology.
25 
Executioner
Defeat an old adversary.
25 
Patriot
Make the final assault.
25 
Lost and Found
Dispatch 10 probes to retrieve people or resources in Reaper territory.
25 
Paramour
Establish or rekindle a romantic relationship.
25 
Combined Arms
Perform any combination of 50 biotic combos or tech bursts.
25 
Focused
Evolve any of your powers to rank 6.
25 
Veteran
Kill 5,000 enemies.
25 
Defender
Attain the highest level of readiness in each theater of war.
25 
Gunsmith
Upgrade any weapon to level 10.
25 
Peak Condition
Reach level 20 in multiplayer or level 60 in single-player.
25 
Battle Scarred
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
25 
Freedom Fighter
Find all required intel to help Eden Prime's colonists.
25 
Prothean Expert
Learn more about the Prothean Empire.
25 
No Stone Unturned
Investigate a sinister conspiracy.
25 
Conspiracy Theorist
Use clues to pinpoint the exact location of an objective.
25 
Family Matters
Rescue a civilian from Reaper forces.
25 
Savior
Free Omega from Cerberus Occupation.
25 
Priority Target
Discover a plot against you.
25 
High Society
Go undercover to follow a lead.
25 
Team Player
Infiltrate an enemy stronghold with your crew.
25 
Technical Issues
Investigate a strange occurrence in the combat simulator.
25 
Simulated Hero
Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.
25 
Tour of Duty
Finish all multiplayer maps or all N7 missions in single-player.
20 
Mobilizer
Bring a veteran officer aboard.
15 
World Shaker
Destroy an Atlas dropped from orbit.
15 
Pathfinder
Explore a lost city.
15 
Tunnel Rat
Survive the swarm.
15 
Party Crasher
Sabotage a dreadnought.
15 
Hard Target
Call down an orbital strike.
15 
Saboteur
Disable a group of fighter squadrons.
15 
Well Connected
Send a warning across the galaxy.
15 
Fact Finder
Discover an enemy's monstrous origin.
15 
Liberator
Stop a Cerberus kidnapping.
15 
Problem Solver
Evacuate a scientific facility.
15 
Soldier
Kill 1,000 enemies.
15 
Overload Specialist
Overload the shields of 100 enemies.
15 
Sky High
Lift 100 enemies off the ground with powers.
15 
Pyromaniac
Set 100 enemies on fire with powers.
15 
Explorer
Complete three multiplayer matches or five N7 missions.
15 
Almost There
Reach level 15 in multiplayer or level 50 in single-player.
15 
King of the Castle
Win a prize at one of the arcade games.
15 
Bringer of War
Chase down an assassin.
10 
Shopaholic
Visit a store in the single-player campaign.
10 
A Personal Touch
Modify a weapon.
10 
Recruit
Kill 250 enemies.
10 
Bruiser
Kill 100 enemies with melee attacks.
10 
Untouchable
Escape a Reaper in the galaxy map.
10 
Eye of the Hurricane
Kill a brute while it's charging you.
10 
Mail Slot
Kill 10 guardians with headshots from the front while their shields are raised.
10 
Hijacker
Hijack an Atlas mech.
10 
Giant Killer
Defeat a harvester.
10 
Always Prepared
Obtain two non-customizable suits of armor.
10 
Perfect Host
Throw a party for your friends.
10 
Driven
Return to active duty.
5 
Enlisted
Start a character in multiplayer or customize a character in single-player.
5 
Tourist
Complete one multiplayer match or two N7 missions.
5