This mission is realitivly easy also. Get a bunch of scv's to harvest the minerals and then build a barracks and get about two squads of marines and hotkey them 1 and 2.(to do this select some people and press control and a number. now if you select something else you can easily reselect the unit by pressing their number.) take your two squads and go up you will meet about a squad of zerglings. Destroy them and go up some more. You will encounter some more zergling, destroy them and then the buildings.go up rightish until you find the base tell a unit to go close to the base and it will become yours. you are now able to build firebats.( these are close range people that do a lot of damange but cannot shoot up.) get a squad of marines and a squad of firebats and take them up to the next batch of zerg. The resistance will be harder here so you may need more people. Destroy all of the buildings and you have won.
