Fantastic work! The gameplay feels great and I had a really good time punching away. The game overall is really polished, with a fleshed out tutorial and an easy to understand combat system. I feel like at times the combat system is a bit too easy, and as mentioned by other players, that it could benefit from an added level of complexity. One of them could be to implement a shield or a sort of counter, that lets the player try to time in the punches from enemies to deal a stronger counter strike, at the cost of more stamina.
Looking forward to seeing more of this!