ME3: Lift 100 enemies off the ground with powers.

ME3: Discover an enemy's monstrous origin.

ME3: Deliver most of the Galaxy at War assets to the final conflict.

ME3: Disable a group of fighter squadrons.

ME3: Evacuate a scientific facility.

ME3: Overload the shields of 100 enemies.

ME3: Explore a lost city.

Kill 100 enemies with melee attacks in Mass Effect 1, 2 or 3

ME3: Uncover an ancient secret.

ME3: Defeat a harvester.

ME3: Dispatch 10 probes to retrieve people or resources in Reaper territory.

ME3: Bring a veteran officer aboard.