Throw a party for your friends.
Investigate a strange occurrence in the combat simulator.
Defeat a group of Spectre-level opponents on Normal, Hardcore, or Insanity.
Score 9999 points in the combat simulator on Normal, Hardcore, or Insanity.
Win a prize at one of the arcade games.
Stop an out-of-control scheme before it's too late.
Infiltrate an enemy stronghold with your crew.
Go undercover to follow a lead.
Discover a plot against you.
Uncover an ancient secret.
Rescue a civilian from Reaper forces.
Investigate a sinister conspiracy.
Free Omega from Cerberus Occupation.
Complete all the Command Center side-missions on Omega.
Find the Talon leader.
Use clues to pinpoint the exact location of an objective.
Overload the shields of 100 enemies.
Finish the game on Insanity without changing difficulty after leaving Earth.
Finish all multiplayer maps on Gold or all single-player missions on Insanity.
Complete Mass Effect 3 twice, or once with a Mass Effect 2 import.
Mission accomplished.
Make the final assault.
Defeat an old adversary.
Deliver most of the Galaxy at War assets to the final conflict.
Obtain two non-customizable suits of armor.
Send a warning across the galaxy.
Finish all multiplayer maps or all N7 missions in single-player.
Extract ancient technology.
Call down an orbital strike.
Establish or rekindle a romantic relationship.
Disable a group of fighter squadrons.
Sabotage a dreadnought.
Discover an enemy's monstrous origin.
Promote a multiplayer character to the Galaxy at War or import an ME3 character.
Evacuate a scientific facility.
Kill 5,000 enemies.
Upgrade any weapon to level 10.
Attain the highest level of readiness in each theater of war.
Reach level 20 in multiplayer or level 60 in single-player.
Perform any combination of 50 biotic combos or tech bursts.
Reach level 15 in multiplayer or level 50 in single-player.
Win a political stand-off.
Hijack an Atlas mech.
Kill 10 guardians with headshots from the front while their shields are raised.
Explore a lost city.
Kill 1,000 enemies.
Defeat a harvester.
Survive the swarm.
Set 100 enemies on fire with powers.
Destroy an Atlas dropped from orbit.
Lift 100 enemies off the ground with powers.
Stop a Cerberus kidnapping.
Bring a veteran officer aboard.
Dispatch 10 probes to retrieve people or resources in Reaper territory.
Learn more about the Prothean Empire.
Find all required intel to help Eden Prime's colonists.
Escape a Reaper in the galaxy map.
Evolve any of your powers to rank 6.
Visit a store in the single-player campaign.
Chase down an assassin.
Return to active duty.
Kill 100 enemies with melee attacks.
Complete three multiplayer matches or five N7 missions.
Kill 250 enemies.
Kill a brute while it's charging you.
Complete one multiplayer match or two N7 missions.
Modify a weapon.
Start a character in multiplayer or customize a character in single-player.
