The Tank: On Brutal difficulty there's a Sieged Tank near the right side of the mineral line. The Hellions: Split your infantry up to avoid splash damage. Focus down the Factory first as the Hellions are quite lethal and be wary of the following threats:
Keep pumping Marines and Medics and when you have a large enough number (20-30+) head north and take out the base to complete the mission. Take out the attackers with the rebels' help and rescue the mini-base. When you have a small Marine and Medic force of about 10 units, head left down the road which will trigger an attack on the rebel base. After you've built a small force, you can take on the units guarding the mine to the north and pick up some more resource containers without taking any losses. It is recommended to float your Barracks up onto the road before you build a Tech Lab so that you reinforce quicker. Move north out of your base with your Marines immediately to collect the resource containers. Send your SCVs to mine and add Supply Depots and Barracks as necessary (you will want at least 3 Barracks) whilst you add Marines, SCVs and Medics.
Similar to a Medivac, she can heal friendly biological units.
This unit can be built from any Barracks with a Tech Lab add-on and costs 75, 50. In this mission the Medic is made available.
