Don’t take damage from the Archangel in the “Back in the Saddle” mission on Normal difficulty.
Heal 300 life on allied units with Medivacs in an Unranked or Ranked game.
Destroy all Protoss structures in the “Welcome to the Jungle” mission on Normal difficulty.
Complete the Heart of the Swarm campaign.
Destroy 40 units with a single unit in an Unranked or Ranked game.