I liked it! I got kinda stuck after the blue gem (Also, I got like 15 papyrus because the room resets every time you exit and re-enter). I'm sure you can fix it for a postjam version!
Thank you for the feedback! We're currently working on a post-jam update that will help players understand the mechanics a little better as well as fix the other bugs in the game e.g. papyrus respawning