Win a Free-For-All Multiplayer Custom Game against 7 Very Easy A.I. opponents.
Morph 20 Zerglings during the first 255 seconds of a single Melee game.
Destroy a total of 100 enemy units in Free-for-All Quick Match games.
Have 21 Zerg units morphing simultaneously in an Unranked or Ranked game.
Complete all the Economy achievements.