Starcraft 2, Brutal difficulty walkthrough with commentary
Mission 11: Whispers of Doom
Guide Zeratul and some stalkers through a series of puzzle-like encounters using your special abilities. Kill 3 hatcheries (locations in video) for research points. Careful control of Zeratul and use of his cloak, stun, and blink are essential to complete this mission. If you are stuck on any of the "rooms", this guide will show you the best way that I know of to defeat each obstacle.
Starcraft 2 Mission 11: Whispers of Doom walkthrough on Brutal (w/commentary) Part 1 of 2
Starcraft 2 Mission 11: Whispers of Doom walkthrough on Brutal (w/commentary) Part 2 of 2