Cool game, I enjoyed the rock-paper-scissors mechanic for combat, I thought that was really creative and worked pretty nicely here. I like how it played into the topic. I enjoyed the attack animations, they all looked really nice and fit with the style well.
If you wanted to improve, I suggest adding particle FX to the characters when they move to create footprints or smoke. I also suggest always having the hero attack towards the player, my hero stood by the left wall and kept attacking towards the wall.