Combat feels good, it's easy enough at least. :D
The highlighting of the buttons is pretty cool, extra good for youtubers/streamers. will need gamepad button highlights too though.
I played without audio because i was listening to a podcast on bluetooth headphones, no idea how it sounds. [just listened to the video - haha, hardly any audio. missed attacks could have whoosh sounds. punch and pain sounds could need a little variation.
Annoying: cut-off animations rather than blended sometimes.
Annoying: way too much blood. removing blood might be required to not slip into higher age rating.
Idea: slight constant camera shake.
Idea: cam shake based on intensity of punch, possibly only for final knock-out. not to be overdone of course :D
Idea: make health more visible (classic top centered left/right health bars, see tekken etc)
Stamina bar also.
Idea: when trying to use a move that can't be done rn, highlight the stamina bar to how much more energy is needed for this move to work.
Visuals are awesome.
At the end the winner could change pose to relaxing/recovering.