It feels very Samurai-like, would love if you change it up a little. Maybe just inverting the controls or having the sword always following the mouse instead of clicking to attack. 

Well done with the little time we had, I liked how I couldn't just move in and kill the enemy instantly. 

the animations are really cool, maybe have a little visual feedback when you hit the enemy.

and also have more enemies spawn when you killed the first.

Nice game, perhaps add some unique mechanics to the fight. Like removing his health bar and stunning him at a certain amount of damage, and being able to push him when stunned, to eventually push him off the edge like real sumo.