24. Part way through the campaign, the Dark Templar Zeratul approached his old friend, Raynor. What dire information did Zeratul tell Raynor?
From Quiz "Wings of Liberty" Campaign
Answer:
That Kerrigan should not be killed
Zeratul went on a quest to learn about the intentions and origins of the Zerg. What he found was that the old Zerg Overmind was merely a puppet, and that Kerrigan was it's answer against its masters. The Xel'Naga, the creators of the Protoss and the Zerg races, were not all benevolent. Zeratul saw that without Kerrigan, the Xel'Naga would be able to destroy all galactic civilization.
Zeratul relayed this information to Raynor through a memory shard, which let players play as the Protoss for a few missions. "Starcraft" was released with one campaign for each of its three races, but "Starcraft II" was released with only one campaign, for the Terran. With the Protoss campaign planned as the last one, this meant Protoss fans had to wait a long time before they had a campaign. The Memory shard missions were a way to tide over the Protoss drought.