ME3: Kill 10 guardians with headshots from the front while their shields are raised.

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

ME3: Evolve any of your powers to rank 6.

ME3: Bring a veteran officer aboard.

ME3: Escape a Reaper in the galaxy map.

ME3: Chase down an assassin.

ME3: Return to active duty.

ME2: Acquire all trophies

ME2: Save humanity throughout the galaxy from certain annihilation

ME2: Warp the barriers of 25 enemies

ME2: Hack a geth collective

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