Good job on the game!
There is a big room for improvement. I liked the overall premise, seemed intuitive, although there are major things, that can be used to vastly upgrade the atmosphere. First of, different assets. I see you are using default textures and characters - you can always download and import your own files or download them for free with the correct licensing. Second, the sound design. You can add a creepy ambience, couple of footsteps, random noises, things like that. And finally, the text - you might use a different font or try creating your own text prompts. It is super easy to use any free software and make it work.
As I said, overall, neat game. If you need any other suggestions or help, I am all willing to give you some recourses or at least point you to them. All the best!
Edit: Good luck with the game jam also 🎇