Stylish and addictive! The gameplay loop reminds me of the flash games I played as a teenager that could consume whole afternoons. Powery is considerably more polished than those games though, and its action game design choices are much more modern, in a good way. I can tell that you put a lot of work into balancing the stamina consumption and regeneration, and it gives the game an ebb and flow that keeps it from becoming stale or spammy. Also, the animations and music are sick as hell and suit the vibe of the game to a tee.
As for constructive feedback, I'd suggest fewer but faster enemies. Parrying is essential, and it's hard to see the enemies' attack wind-ups when you get mobbed by a million dudes, so my strategy was to run away so that I could engage enemies one-on-one and nail the parries. Faster enemies would make running away less viable, and make it so that the only means of relief is to risk a parry and activate the screen nuke. That would tighten the risk and reward tradeoff, I think. And like I said, making the crowds slightly thinner would make parrying while in the fray feel more fun and fair.
All in all, Powery feels very complete in a way that few game jam submissions do, so hats off to everyone involved in the project! I had a lot of fun with this one.