Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Regenerate 500 life on a single Roach without taking friendly fire in an Unranked or Ranked game.
Win 100 Team Unranked or Ranked games as Zerg.
Score the rank of Gold in the “Infestation” challenge mission.
Mutate a Lair during the first 285 seconds of a Melee game.