I think there are a lot of really good ideas in this platformer! Having the dash only work in the spirit world is cool and the door to another world is also cool. I really struggled with the wall jump, I think it needs a delay where pushing the alternate direction doesn't immediately make you drop off the wall. I'd also add coyote time to the jumps as that makes any platformer feel better.
Overall tho I think this is a really solid jam entry. Awesome job!