It's a neat map, but I sort of take issue with the whole "100 Run Challenge" thing.

New maps are so few and far between that it doesn't make much sense to push artificial limitations on ourselves. It's impressive that you can get this much map into 100 brushes, but ice said he had to make some pretty weird geometry to get it all in. Why limit yourself? If it's going to take a few extra brushes to make the map complete, put them in. This isn't the demoscene where you win awards for fitting the most content into 4096 bytes. I would wager that 90% of people who play this map don't even know about the 100 challenge and wouldn't understand it even if you explained it, so how are they going to appreciate that?

As I said though, neat map. Definitely worth a play.