Control 15 hallucinations at once in a Melee game.
Complete the “Whispers of Doom” mission on Hard difficulty without Zeratul suffering life damage.
Purchase the Tal’darim Highlord Alarak Co-op Commander.
Destroy 20 units with a single High Templar in a Melee game.
Using Warp Prisms, warp in 50 units in a single Melee game.