Destroy 2 Protoss Nexuses in the “Shoot the Messenger” mission on Normal difficulty.
Complete 5 Heart of the Swarm campaign missions on Normal difficulty.
Score the rank of Bronze in the “Tactical Command” challenge mission.
Destroy a fully loaded transport in an Unranked or Ranked game.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.