Score the rank of Gold in the “Infestation” challenge mission.
Kill the Brutalisk in the “Piercing the Shroud” mission without losing a unit to the Brutalisk on Normal difficulty.
Kill the Brutalisk with lava in "The Devil’s Playground” mission on Normal difficulty.
Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.
Use a Leviathan to kill 25 enemy units or structures in a single mission.