I had to restart a couple times because I once I fell through the floor, and once I fell into the center of one of the tower staircases.
Overall, pretty interesting, but I would have loved to see a bit more of the story. The text at the beginning sets up some pretty cool lore, and seeing the aftermath of that is good, but then I feel like it starts to fall apart a bit once you get inside the castle.
Still, I had fun, and it's a hell of a lot better than anything I could manage in a month.