Full list of all 68 Mass Effect 3 achievements worth 1,550 gamerscore. It takes around 50-60 hours to unlock all of the achievements in the base game on Xbox 360.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 4 DLC packs containing 18 achievements worth 550 Gamerscore.
- Last Witness
Extract ancient technology.
Defeat an old adversary.
- Well Connected
Send a warning across the galaxy.
- Fact Finder
Discover an enemy's monstrous origin.
Stop a Cerberus kidnapping.
- Problem Solver
Evacuate a scientific facility.
Make the final assault.
Visit a store in the single-player campaign.
- Master and Commander
Deliver most of the Galaxy at War assets to the final conflict.
- 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.
Finish the game on Insanity without changing difficulty after leaving Earth.
- A Personal Touch
Modify a weapon.
Establish or rekindle a romantic relationship.
- Combined Arms
Perform any combination of 50 biotic combos or tech bursts.
Evolve any of your powers to rank 6.
Kill 250 enemies.
Kill 1,000 enemies.
Kill 5,000 enemies.
Kill 100 enemies with melee attacks.
Escape a Reaper in the galaxy map.
Attain the highest level of readiness in each theater of war.
- Overload Specialist
Overload the shields of 100 enemies.
- Sky High
Lift 100 enemies off the ground with powers.
Set 100 enemies on fire with powers.
- Eye of the Hurricane
Kill a brute while it's charging you.
- Mail Slot
Kill 10 guardians with headshots from the front while their shields are raised.
Hijack an Atlas mech.
- Giant Killer
Defeat a harvester.
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.
Complete one multiplayer match or two N7 missions.
Complete three multiplayer matches or five N7 missions.
Upgrade any weapon to level 10.
- 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.
- Battle Scarred
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
Finish all multiplayer maps on Gold or all single-player missions on Insanity.