Once you reach the settlement, immediately build 5 SCVs and 2 Supply Depots. Continue down the down to the first bunker junction. Advance to the left towards the settlement. You should find a tiny path that leads to a clearing with a few lings and several resource containers that will help immensely.
Click on the northern side of the forest to walk through. Before advancing towards the colony, head north east a little way, until you come to what appears to be an impenetrable forest. You start with two Firebats and two Medics on the lower right part of the map. Regardless of the planet path you chose, you should be able to afford them. This mission is significantly easier with Fortified Bunker upgrade and the Hammer Securities mercenaries. Supply them with 2 SCVs and 2 Medics for repairs. You need to build 2 Bunkers and 1 Turret at the 3 entrances along the road. The player has the ability to build Firebats in this mission.
