Dumb fun, that's how I would describe One vs. One Million Yokai. I mean the regular game does take a lot of coordination, but most of your score will come from the Yokai rush during your specials where you can essentially punch around aimlessly.
The enemies are all well designed, I liked the idea for multi hits on mirror-chan and umbrella-chan although I didn't play up to them.
I also loved how punishing misses were, whereas a successful kick could be reversed so as to cover enemies arriving from the back. If the Yokai rushes were nerfed a bit, I'd say this was actually very well designed.
The visuals are retro but they're superb for the style you were going for so nice job there.
And although there was no audio (at least when I was playing in the browser) all of your other work is impressive for a solo-submission. Great job!