This is a cool idea, though I'm kinda struggling a bit with it. This could be a skill issue, but I'm finding it hard to do the circles to speed up without accidently sending myself flying around the arena, and with the camera moving the way it does, I end up getting a bit disorientated and losing myself as my opponent takes the opportunity to beat me up while I'm a bit helpless. It's also hard to tell if I'm doing/taking damage. Cause like, in my first attempt, the first gyro took a good few hits before going down, but on my second they went done in like one, and then on my third it went back to taking a few good hits despite not really doing much different between rounds two and three, and the second gyro just... They hurt and it gets hard for me to keep up properly cause I just don't know how badly I'm hurting before its too late. I'm unclear as to what I'm doing wrong sometimes, honestly.
Outside of that though, I like the look and vibe of this game, the sound effects were pretty satisfying and I liked the music. It really kinda sold this ancient ruins aesthetic pretty well, which is good. So, despite anything I say, good work on making this despite the heat. I definitely got the intended experience as its pretty toasty in my own room right now as well.