Complete the “Echoes of the Future” mission with Zeratul killing 50 Zerg units on Normal difficulty.
Complete all mission objectives in the “Piercing the Shroud” mission.
Kill 250 additional Zerg units in the “In Utter Darkness” mission on Normal difficulty.
Attack for 20 seconds with no counterattacks in an Unranked or Ranked game.
Kill 50 supply worth of units within 15 seconds in a Melee game.