Battle.net

Kill 50 supply worth of units within 15 seconds in a Melee game.

Destroy 10 cloaked or burrowed units in a single Melee game.

Capture 50 enemy units in a single Vortex in a Melee game.

Destroy 40 units with a single unit in an Unranked or Ranked game.

Kill 15 enemy units with a single Nuke in an Unranked or Ranked game.