Kill 100 enemy units with the Infest Broodlings ability active.
Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Complete the Heart of the Swarm campaign.
Purchase StarCraft II Wings of Liberty Collector’s Edition.
Speak to the following characters before assaulting Mengsk’s Palace on Korhal [Abathur, Zagara, Dehaka, Stukov, Izsha].