Starcraft 2, Brutal difficulty walkthrough with commentary
Mission 17: Cutthroat
Race the computer to gather 8000 minerals, and then destroy its final base. Destroy 3 outer command centers to drastically slow its mineral aquisition. The computer actually gathers extremely fast, so you have to be quick about attacking. You get vultures on this map, but they don't do much besides pick up mineral deposits and die. Once you have won the resource race, the final push is extremely easy, as you now have unlimited time and money to finish the mission.
Starcraft 2 Mission 17: Cutthroat walkthrough on Brutal (w/commentary)