Space Marine (Oathsworn Software)

The year is 3045 and Earth is at war with the Vrarkrix, an alien horde consisting of varied semi-intelligent species looking to expand from their dying home. Our world, although damaged would support the Vrarkix for the next 50 years, giving them the time to find more worlds to plunder. The Vrarkrix have pushed forward into our solar system and established a forward base on Callisto, one of Jupiters 79 moons. They are planning an all-out assault in the coming days. You, Marshal Jarak have orders to destroy the portal transporter that is being used by the Vrarkrix to deploy their soldiers deepe...