Score the rank of Silver in the “For the Swarm” challenge mission.
Mutate a Lair during the first 285 seconds of a Melee game.
Locate all the Moebius survivors in “The Moebius Factor” mission on Normal difficulty.
Complete 5 Zerg research console projects.
Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.