Deplete 10 Rich Mineral Fields in a single Melee game.
Destroy 40 units with a single unit in an Unranked or Ranked game.
Score the rank of Gold in the “Rush Defense” challenge mission.
Kill 150 Zerg units with the Artifact in the “All In” mission on Normal difficulty.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.