You talking about SC2? In the last mission she never destroyed more than 1 or 2 units per attack, and those were always to her insta-kill ability. I had 7 siege tanks guarding the left pass and 6 on the right with 3 bunkers on both entrances with the +2 marine and guntower upgrades. To cover the rest I had 3 banshees and 2 wraiths watching my base and about 8 battlecruisers for taking on Kerrigan. The yamato cannon from 8-10 battlecruisers makes short work of her.
