Lemmings + Sci-Fi = ?

A corrupt alien race (Mongoloids) has invaded a peaceful alien (Limanoids) homeworld to take over their extensive resources. The Mongoloids are having a difficult time taking over their planet from the surface because most of the Limanoid structures are underground. So they decided that they will go underground to find them. Since the Limanoids are a peaceful people, they will not fight. You are an ambassador from Earth and now have become responsible of moving the citizens safely to the transport portals. However, the Humans have vowed to destroy the Mongoloid ships. This will take time, but is this enough time for you to guide the Limanoids to safety? Create, build, and guide the Limanoids safely to the portals. This is going to be done with some extensive creativity with the planets strange, but useful resources.