Wow. A lot of great concepts, with a fair bit of work to fully realize them. As others have said, it seems you need to finish some of the art. The concept of the interior spread is great though; I love seeing the whole pyramid under the ground. As others have mentioned, I think you could easily tone down the railroad-y aspects (instead of, "When the players arrive here, x happens" make it "if the players arrive here and do y, then x happens"), add some blocks behind the text to help it stand out, and maybe organize the whole thing a bit more, and this could be a great exploration module.