Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Complete the “Echoes of the Future” mission on Hard difficulty in less than 20 minutes.
Complete 10 missions in the Wings of Liberty campaign on Brutal difficulty.
Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Complete all 29 Wings of Liberty campaign missions on Brutal difficulty.