Rich setting that could bear a much longer adventure, and well presented in a visual aesthetic that supports the 'feel' of the huge Cathedral/Pyramid structure, Very cool complexity available with the various rooms, hooks, and random encounters. Decoherence mechanic offers an interesting new way to punish players :D
I feel this would benefit from spread out a little more over another page, I know that's not the competition etc, but I would definitely buy this spaced out with a bit more art to show the interiors or maybe what being decohered does to someone. Good stuff.