Complete the Wings of Liberty campaign.
Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Destroy 15 Infested structures at nighttime in the “Outbreak” mission on Hard difficulty.
Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.
Kill 50 supply worth of units within 15 seconds in a Melee game.