Kill 50 supply worth of units within 15 seconds in a Melee game.
Hold a Xel’Naga Tower for 5 consecutive minutes in an Unranked or Ranked game.
Complete 3 challenge missions with a Bronze rating or higher.
Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in an Unranked or Ranked game.
Win 50 1v1 Unranked or Ranked games as Protoss.