Destroy an Atlas dropped from orbit.

Kill 250 enemies.

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

Upgrade any weapon to level 10.

Explore a lost city.

Defeat an old adversary.

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

Reach level 15 in multiplayer or level 50 in single-player.

Return to active duty.

Modify a weapon.

Evolve any of your powers to rank 6.

Make the final assault.