Battle.net

Capture 50 enemy units in a single Vortex in a Melee game.

Destroy 20 units with a single High Templar in a Melee game.

Warp in 100 units with Warp Gates in a single League game.

Use Blink to save a Stalker in a Melee game.

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