Complete the “Smash and Grab” mission on Normal difficulty without losing a unit to a Protoss Stone Guardian.
Mutate a Lair during the first 285 seconds of a Melee game.
Kill 5 Changelings in an Unranked or Ranked game.
Complete the “Zero Hour” mission on Normal difficulty without losing or salvaging a structure.
Destroy all Zerg structures in "The Devil’s Playground” mission on Normal difficulty.