Battle.net

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

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

Have 9 Terran units training simultaneously in an Unranked or Ranked game.

Score the rank of Gold in the “Covert Ops” challenge mission.

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