Concordia was once a lush moon of Mandalore. During the
civil war it was turned into a mining colony. Massive
mining operations have destroyed the entire ecosystem - not
just flora and fauna, but the very atmosphere itself is now gone!
Most inhabitants have long since moved away, but rumor has it that
the Death Watch now uses the colony for unknown purposes.
Concordia's theme is based on the Arnold Schwarzenegger movie Total Recall
and is a nice piece of work in that respect.
The main mission is also based on the movie. If you have seen it, then the
mission will be a lot easier. The planet is not large: the city itself with
the hotel, the sewers and the old alien mines. Be careful to not get lost
in the pyramid maze.