I played this out over a few sessions with a varying group each time. Most of the times I ran it, we had some younger kids playing with us, and so the five "One-Hour" adventures turned into something more simillar to four 3-hour adventures, but overall we had a bunch of fun! And if I'm being honest, it had a lot to do with not being ready to guide things on my part :)
Overall it was a lot of fun!
The rest of my review highlights what I liked/didn't like, and while I try to avoid any explicit spoilers it could be a little spoiler-y.
I think the parts of it I liked the least were the descriptions/solutions to the puzzles in Parts 1 and 4. They were a little too hard for me to understand at first, and if I'd followed them as written they would have boiled down to "Roll an Investigation check to see if you solved the puzzle". I substituted them with a few home-brewed puzzles that fit the theme of what they were trying to accomplish and everything worked out fine though :)
The story was interesting, but I felt it lacked a little clarity/instruction on how to guide the players through the different parts/it wasn't super clear on how the MacGuffins came to be in the possession of the characters who had them, nor was it super clear on what they could have even be used for/why the baddies wanted them. All that said, each chapter felt distinct, and each one was fun. The variance on the NPCs was great for my love of playing characters, and I particularly liked getting into the boots of Soggy Wren :)