Use the Artifact no more than once in the “All In” mission on Hard difficulty.
Destroy 40 units with a single unit in an Unranked or Ranked game.
Kill 50 supply worth of units within 15 seconds in a Melee game.
Complete 25 missions in the Wings of Liberty campaign on Hard difficulty.
Win 100 1v1 Unranked or Ranked games as Protoss.