Complete all 29 Wings of Liberty campaign missions on Brutal difficulty.
Use the Artifact no more than once in the “All In” mission on Hard difficulty.
Kill 150 Zerg units with the Artifact in the “All In” mission on Normal difficulty.
Destroy all Protoss structures in the “Welcome to the Jungle” mission on Normal difficulty.
Kill 15 enemy units with a single Nuke in an Unranked or Ranked game.