I like the overall direction this is heading, especially the art style. However, I feel it really needs to be tuned to make it a bit less frustrating. I don't feel that I have much control over whether or not my character takes damage and dies. I think this might partially be because of a lack of mobility. The ghosts seem to one-hit kill each time too, and it's nearly impossible to dodge them. I found myself simply killing the first skeleton on the left and maybe one more before dying and restarting. Letting the player jump higher, move faster, and have some way of killing the ghosts too would make this much more enjoyable.
Keep up the great work and congrats on the submission!