Battle.net

Destroy 6 units with a single Seeker Missile in an Unranked or Ranked game.

While playing as Zerg, warp in a Zealot in a Melee game.

Destroy 20 units with Sniper Rounds in an Unranked or Ranked 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.