Everyone says that Chapter two was too easy. I don't agree with that. I just think it was too short. Narwhal seemed just satisfyingly long enough while Siege seems just short of being long enough and worth the while. There just didn't seem to be enough to do while Narwhal had new puzzles to work with all over the place (granted most of those were different versions of treasure hunting puzzles, but still).
I hope the next episodes are longer or at least as long as Narwhal was. Great game, though. Can't wait for Chapter three! It was also nice to see the Wiiware release come so soon after the PC release.