Well, the issue I had with mission 7, I figured out. I was trying to annhilate both the red and orange tribes nexus (S). The orange tribe had two and the red tribe had one...I knocked out the red tribes nearest one and thought I'd have to destroy the other and then the red tribes, too...but as it turns out, once either teams last nexus falls into the red zone (Almost Destroyed) Tassadar calls Alderis and says he can't stand seeing Protoss warriors killing each other and offers to surrender, ending the mission and giving you a victory. Thank God I didn't have to try to wipe out both tribes! I would not have been able to do it....I might write Blizzard and see if they made it impossible to do both! because when your enemy has carriers and can cloak and teleport strike forces into your base and you can't...you stand VERY little chance!