Battle.net

Train 10 Marines during the first 320 seconds of a single Melee game.

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

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

Cancel construction of a structure that is being destroyed by an opponent in a Melee game.

Attack for 20 seconds with no counterattacks in a League game.