I was really impressed by the various systems you managed to develop in such a short time: dialog trees, items that you can pick up and look at, and solid title and credits scenes.
I actually went back and played it a second time to see if I could recruit everyone (I gave in to peer pressure the first time), and was pleasantly surprised that the ending was a bit different.
My only complaint is that the fog is a bit too intense at the beginning. It made it hard to navigate at times, although I suppose that is more or less the point!