North Star

The North Star project is the most highly classified operation ever to be undertaken by the four Earth-Lords, but, unfortunately, it has gone critically wrong.
In the year 2499, the already over-populated earth was gripped in the serious state of starvation. Wars were commonplace and man fought man in the desperate attempt to control the more fertile regions of the earth. An emergency meeting was called by the four Earth-Lords, and together they decided on an elaborate plan. They would construct a space station that would orbit the earth. Not a space station like those you and I know of, but a huge man-made, star-like construction that would be ca¬pable of housing not hundreds of people, but thousands upon thousands of them. Not only would the space station provide a home for these peoples, but with the controlled simulated atmosphere it would be the perfect agricultural site, thus helping ease the food shortage.
Daily flights filled with materials and scientists were sent to build and test the station. Everything seemed to be on schedule until one day when a flight never returned from the station. The space station, now known as the North Star, was paged from the operations centre on the Earth, but there was no reply.
Upon arriving aboard the station you find that the North Star has been over-run by a strange alien horde. No human lifeforms are visible. Are they all dead? The life-support systems all seem to be inoperative and only your robotic implants stop you from becoming a victim of the aliens’ atmosphere. Your task is clear: destroy the alien lifeforms and re-activate the life- support systems. To perform the latter, you will have to travel to the very heart of the North Star’s nerve centre. This will not be an easy mission, but you must succeed - all Earth is depending upon you.