Defeat 20 enemies with gunfire by aiming while hanging

Defeat 70 enemies with the FAL

Find 20 treasures

Defeat 50 enemies with hand-to-hand combat

Defeat 20 enemies with headshots

Defeat ten enemies in a row with hand-to-hand combat

Make the final assault.

Kill 1,000 enemies.

Finish all multiplayer maps or all N7 missions in single-player.

Extract ancient technology.

Call down an orbital strike.

Sabotage a dreadnought.