Well I said I'd play it however many posts ago and I did (that night actually) so anyway:
I liked the first bit very much. 'Twas very surreal and ambient. Using simple lines as walls was a nice idea, I dunno why nobody thought of it before, but it opens up the door to whole new mapping styles. Unfortunately there isn't much more than that... I look forward to when you end up completing something one of these days (not just a mod) since I believe it will be a very good experience to play it