Battle.net

Have 9 Protoss units warping in simultaneously in an Unranked or Ranked game.

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

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

Use Blink to save a Stalker in a Melee game.

Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.