Locate all the Moebius survivors in “The Moebius Factor” mission on Normal difficulty.
Prevent the Protoss from killing an SCV in the “Welcome to the Jungle” mission on Normal difficulty.
Complete all mission objectives in the “Engine of Destruction” mission.
Complete the “Smash and Grab” mission on Hard difficulty in less than 15 minutes.
Destroy 50 Protoss structures in “The Dig” mission on Hard difficulty.