This is just a slow-steady-and-win mission, tho it can take a long time to get through. Build up your levels slowly, being sure to keep the essential buildings going, a sickbay fully functional, and lots of security items. Also have lots of power boosters so you keep energy going. You'll have lots of battles in this one, but if you learned the lessons well from previous missions, it's just a matter of slugging them through and winning!

Startopia Full Walkthrough