Kill 50 supply worth of units within 15 seconds in a Melee game.
Kill 75 enemy units or structures with cloaked Banshees in the “Supernova” mission on Hard difficulty.
Complete all the Covert mission achievements.
Win a Free-For-All Multiplayer Custom Game against 7 Elite A.I. opponents.
Complete the “Maw of the Void” mission without losing a unit inside the Rip-Field on Hard difficulty.