So, a lot of people apparently have been playing the demo so far, and it seems a few have been getting stuck especially on the Clock Puzzle, so a small hint I will give here is:
Look at the clocks in the hallway (E to interact) and see what times they chime at.
This hint should helpfully help anyone whose stuck on that puzzle. I have already implemented a hint inside the game (current version, not released) and that will be part of the full game.
If you still need help, make sure to join the Discord to ask any questions and I'll be happy to help!
Discord: https://discord.com/invite/XSZ9YqsFf5
Best Regards,
LenexTL