Battle.net

Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.

Complete the “Belly of the Beast” mission without letting a hero fall Incapacitated on Normal difficulty.

Kill 150 Zerg units with the Artifact in the “All In” mission on Normal difficulty.

Destroy all the Spore Cannons in “The Gates of Hell” mission on Normal difficulty.

Purchase all Mercenary contracts.