I replayed this just now, and it’s held up really well, better than a bunch of other DM-to-SP conversions. There’s a lot of challenges in getting a good SP progression out of a small interconnected map, and negke solves them nicely here. Reminds me of some of the best small-area-challenge SP jams like the Xmas jams or 768^2.
The underlying map by ShadoW is a neat structure too, and I enjoy the mixtex look.
Like other folks said above, the main problem is just that there’s not more of it.