Kill a brute while it's charging you.

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

Set 100 enemies on fire with powers.

Discover an enemy's monstrous origin.

Win a political stand-off.

Kill 100 enemies with melee attacks.

Complete one multiplayer match or two N7 missions.

Start a character in multiplayer or customize a character in single-player.

Destroy an Atlas dropped from orbit.

Kill 250 enemies.

Bring a veteran officer aboard.

Visit a store in the single-player campaign.