Kill 50 supply worth of units within 15 seconds in a Melee game.
Win a Free-For-All Multiplayer Custom Game against 7 Medium A.I. opponents.
Kill 150 Zerg units with the Artifact in the “All In” mission on Normal difficulty.
Score the rank of Bronze in the “Covert Ops” challenge mission.
Win 5 2v2 Versus A.I. games in a row against Very Easy opponents.