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