Destroy 40 units with a single unit in an Unranked or Ranked game.
Kill 150 Zerg units with the Artifact in the “All In” mission on Normal difficulty.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Destroy 10 cloaked or burrowed units in a single Melee game.
Score the rank of Silver in the “Rush Defense” challenge mission.