AMAZING
Seriosly, it is amazing. I usually do not like these games and I loved it. What sold it was it's originality, story, and GOOD puzzles. There needs to be a sequel.
The only thing that could make it better is an extra ending for 100%, and more than one background music (although the one you have for this is perfectly fine, more would be less repetitious).
Please, keep up the awesome work.