Meatgrinder
Kill 50 supply worth of units within 15 seconds in a Melee game.
Carnage Hall
Destroy 4 Command Centers, Hatcheries, or Nexuses in a single League game.
Counter-Proof
Attack for 20 seconds with no counterattacks in a League game.
Denied
Destroy an enemy Command Center, Hatchery, or Nexus while it is under construction in a League game.