I really enjoyed this one! Looks great, sounds great and fits very well, and definitely fun!
Some things I noticed: I felt like sometimes when I use the spin to attack, it didn't work very well, especially if I was alrd holding down two directional keys, and one time I got clipped out of the arena. Maybe something to look into that's being a tiny bit buggy. Also the contract gets cut off at the top/bottom on an ultra wide full screen monitor.
Overall, loved it! Good job!