I appreciate the work you put into this and the concept is really nice but I think it has a long way to go before it becomes something special. I imagine you're a new Unity developer and if that's the case then I want to praise you for making a complete game and uploading it to the jam! That's what these jams are for and they are great for learning and improving skills. I'm glad I played the game and I hope you'll give my game a try too! Here's a few things I think could help you:
The character often gets stuck on walls and sometimes even the floor which makes movement janky and difficult. The way to fix this is to create something called a physics material which has a property for friction. You'll want to set it to 0 then apply the physics material to the character to eliminate this issue.
It's typically good practice in games to make enemy and spike hitboxes a little smaller than the actual size of the object. This makes the game feel more fair which results in a better experience.