Destroy 4 Command Centers, Hatcheries, or Nexuses in an Unranked or Ranked game.
Destroy an enemy Barracks, Factory, and Starport in the “Media Blitz” mission during the sneak attack on Normal difficulty.
Destroy all Zerg structures in "The Devil’s Playground” mission on Normal difficulty.
Complete 5 Zerg research console projects.
Kill 250 additional Zerg units in the “In Utter Darkness” mission on Normal difficulty.