Win 3 solo evenly matched Custom Games against any A.I. opponents.
Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Complete the Zeratul storyline in the Wings of Liberty campaign.
Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.
Complete all mission objectives in the “Echoes of the Future” mission.