You did an really solid one with making all the graphics and animations! Good job!
And I think the idea is pretty interesting on a concept level.However, I had to watch Zackavelli's stream and your explanations to understand how it was suppose to function though, only then did the loop start to make sense as a game. My main feedback is the same, that the lack of indicators really makes it hard to understand what is actually going on (especially the timer).
You have already heard about the hit-feedback and controller conventions, so I will just mention that as you jump in it is a bit confusing that there is so much loot, but you can't pick it up. I think bonepiles and dust would be a better indicator for the corpses you are too clean. Just floating skulls don't scream cleaning up to me :). (and I get you probably just didn't have time for it, but a broom sweeping animation would do a lot for the clean up stage).


