I had a blast with this adventure. It is the most creative scenario I have seen in a few seasons and I predict it will stand out as a classic a la Mists of Mwangi. The NPCs were fun and my players had a great time going over the riddles and trying to predict what was coming next.
I would love to see more scenarios like this in the future. And more from this author!
I really can't say enough good things about this scenario. Honestly the only negative thing I can say about it is that the second map is horribly complicated and I feel bad for anyone who tries to draw it. But overall this has been one of my favorite scenarios from the past few seasons.