Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.
Kill 150 Zerg units with the Artifact in the “All In” mission on Normal difficulty.
Kill 15 enemy units with a single Nuke in an Unranked or Ranked game.
Control 15 hallucinations at once in a Melee game.
Score the rank of Gold in the “Infestation” challenge mission.