Amazing work! I really love the effects work in this so much. Particularly, right before each eye slams, the distortion effect is wonderful. Also the edge effects around the arena look great too!
The gameplay is also solid! Though personally I like to play this style of game with a controller using a twin stick setup. I tended to lose my mouse placement when quickly aiming around. It also might be the similar colors with the floor heh.
But minus that small nitpick, this is super well done!