Battle.net

Destroy 6 units with a single Seeker Missile 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.

Call down 30 MULEs in an Unranked or Ranked game.

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