Battle.net

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

Complete all the Unranked / Ranked Combat achievements.

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.

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