Complete the Heart of the Swarm campaign.
Reach Kerrigan Level 70 in the Heart of the Swarm campaign.
Use a Leviathan to kill 25 enemy units or structures in a single mission.
Complete all Kerrigan Level, Army mutation, and Evolution mission achievements.
Speak to the following characters before assaulting Mengsk’s Palace on Korhal [Abathur, Zagara, Dehaka, Stukov, Izsha].