Complete the “Maw of the Void” mission without losing a unit inside the Rip-Field on Hard difficulty.
Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.
Complete 20 missions in the Wings of Liberty campaign on Hard difficulty.
Complete all mission objectives in the “In Utter Darkness” mission.
Complete 15 Heart of the Swarm campaign missions on Hard difficulty.