Kill a Stank before it kills anything on Hard difficulty.
Destroy 40 units with a single unit in an Unranked or Ranked game.
Destroy 20 units with a single High Templar in a Melee game.
Survive 15 Infested Horde Attacks in the “Night 2 Die" mode of the “Left 2 Die” scenario.
Complete the “Left 2 Die” scenario on Hard difficulty.