Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Destroy all Zerg structures in "The Devil’s Playground” mission on Normal difficulty.
Complete 5 missions in the Wings of Liberty campaign on Hard difficulty.