Really cool idea. A bot opponent would have been cool but it's a great game nevertheless.

I don't know if it's a bug or I missed something, but either falling out of the arena - or making the other player fall out - doesn't move the counter at the top.

I reallyyy love how this looks, for ages I was thinking "this would be cool if it was two players" before realising it IS two players with the arrow keys haha. I honestly might have to come back to it with someone. I already love the cinematic setup at the beginning and the arena is quite nice, the only thing it really lacks is some hurt feedback and that kind of stuff. You've got something good here!