Whispers of Doom

For this mission you'll take control of Zeratul, a Dark Templar hero. He is permanently cloaked, but can be detected by overseers and spore crawlers. As both are anti-air only, Zeratul is safe from them, however these detectors will alert their allies. Depending on the situation, it is some times better to take out the detector first, or destroy the Zerg that are clearly not in the detector's range.

As you explore the caverns for the prophecy fragments, you'll soon be aided by stalkers. These new units are anti-air and can quickly destroy pesky overseers. However, since they are not cloaked, Zeratul will need to fight anything that would quickly decimate the stalkers.

Towards the end of the mission, you'll come across the high templar Karass and Kerrigan. Karass and his zealots will hold Kerrigan at bay, while you escape the cavern. His forces will not last forever, and if Kerrigan manages to catch up to you, escaping may be impossible. You'll need to pick your battles carefully, mainly stopping only to destroy pesky Nydus worms that will produce constant foes. If need be, sacrifice a stalker while you move Zeratul to the goal.