The concept is promising - I like the idea of risking a replayed loop to grow stronger later down the road - but I do wish there was a little more mechanical depth, as I could not tell if the different abilities you get did anything other than deal more damage. I also think there should be more than one infinitely repeatable ("zero-loop"?) ability - doesn't have to be many, just a second one so I don't feel stuck spamming the same attack when all my other abilities are on cooldown.
There is a solid foundation in this game, and I'd love to see it expanded upon after the jam ends. Great work.