Nice job! I liked the story you created and the order mechanic. I also got stuck on the key level and couldn't figure out what to do. Glad you put a button to skip to different levels though. The dragon was very cool!
Thanks! I wanted the boss battle to be much more exciting but I absolutely ran out of time to polish up the last two levels. I'm glad you got a chance to enjoy most of the content anyway, and I've added a walkthrough for future players in case the puzzles are too nonsensical. :D