Complete the “Whispers of Doom” mission on Hard difficulty without Zeratul suffering life damage.
Prevent the Protoss from killing an SCV in the “Welcome to the Jungle” mission on Normal difficulty.
Use the A.R.E.S. to kill the Brutalisk in the “Piercing the Shroud” mission on Normal difficulty.
Complete the “Zero Hour” mission on Normal difficulty without losing or salvaging a structure.
Complete the “Belly of the Beast” mission without letting a hero fall Incapacitated on Normal difficulty.