So I played your game on my 3 games series on Odysee the link is:
https://odysee.com/@Kaiju_Raptor:a/3G_Ep_15:e
Your game starts at the 14:45 mark and I critique it at the 34:45 mark.
I liked your game however I think you need to add checkpoints to some levels take Stage 3, I struggled from the bunny hops over a spike pit and would have liked to have a checkpoint before them as I found returning to the beginning of the level too punishing until eventually it turned into frustration and I quit playing; your controls are simple and, fluid and I would actually consider playing this game fully when the full version eventually comes out, but if I may: add checkpoints on longer levels, I would like to see more of the difficult enemies in levels as they progress, possibly a way to get more hearts, a story as to why the character wants to escape the afterlife, and lastly a few bosses along the way; but overall solid game.