Kill 50 supply worth of units within 15 seconds in a Melee game.
Warp in 100 units with Warp Gates in an Unranked or Ranked game.
Kill 250 additional Zerg units in the “In Utter Darkness” mission on Normal difficulty.
Score the rank of Gold in the “For the Swarm” challenge mission.
Score the rank of Gold in the “Path of Ascension” challenge mission.