World Shaker
Destroy an Atlas dropped from orbit.
Pathfinder
Explore a lost city.
Tunnel Rat
Survive the swarm.
Party Crasher
Sabotage a dreadnought.
Hard Target
Call down an orbital strike.
Saboteur
Disable a group of fighter squadrons.
Arbiter
Win a political stand-off.
Last Witness
Extract ancient technology.
Executioner
Defeat an old adversary.
Well Connected
Send a warning across the galaxy.
Fact Finder
Discover an enemy's monstrous origin.
Problem Solver
Evacuate a scientific facility.
Patriot
Make the final assault.
Legend
Mission accomplished.
Lost and Found
Dispatch 10 probes to retrieve people or resources in Reaper territory.
Long Service Medal
Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.
Insanity
Finish the game on Insanity without changing difficulty after leaving Earth.
Paramour
Establish or rekindle a romantic relationship.
Untouchable
Escape a Reaper in the galaxy map.
Overload Specialist
Overload the shields of 100 enemies.
Hijacker
Hijack an Atlas mech.
Giant Killer
Defeat a harvester.
Enlisted
Start a character in multiplayer or customize a character in single-player.
Tour of Duty
Finish all multiplayer maps or all N7 missions in single-player.
Always Prepared
Obtain two non-customizable suits of armor.
Explorer
Complete three multiplayer matches or five N7 missions.
Almost There
Reach level 15 in multiplayer or level 50 in single-player.
Peak Condition
Reach level 20 in multiplayer or level 60 in single-player.
Under Pressure
Uncover an ancient secret.
Savior
Free Omega from Cerberus occupation.
Talon
Find the Talon leader.
Meticulous
Complete all the Command Center side-missions on Omega.
Priority Target
Discover a plot against you.
High Society
Go undercover to follow a lead.
Team Player
Infiltrate an enemy stronghold with your crew.
Last Resort
Stop an out-of-control scheme before it's too late.
Perfect Host
Throw a party for your friends.
King of the Castle
Win a prize at one of the arcade games.
Technical Issues
Investigate a strange occurrence in the combat simulator.
Simulated Hero
Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.
The One and Only
Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.