Oh I quite like how this one was thought out. Took a bit for me to pick up on the reaper thing, but it was a neat mechanic to add in a finisher move once the souls leave their bodies (though I wish they wouldn't immediately get stuck in the ceiling so much oops).
I did find myself avoiding enemies a lot, and what might have fixed that would be if reaping the souls gave you some of your life back. Though as a more direct solution I think the enemies could've used much less HP, possibly with the trade-off of them doing more damage, since their attacks are pretty well telegraphed. Also some flashing effect or something when they get damaged would help the game feel lot too. Some checkpoints would help a lot too since a lot of jam games seem to be missing that. Dontaskmewhy.
Anyway this still felt like a good balance of difficulty to improve and make it through, so good job!