Destroy all Rip-Field Generators in the “Maw of the Void” mission on Normal difficulty.
Complete the “Whispers of Doom” mission on Hard difficulty without Zeratul suffering life damage.
Complete all mission objectives in the “Maw of the Void” mission.
Use Blink to save a Stalker in a Melee game.
Collect all 5 Xel’Naga Artifacts.