The action was really well choreographed and the background was really appealing. Did you made them?
I also like the way you animated the movement. It felt really natural and it's as if I were watching a demo of a videogame.
You could have zoomed more into the action, but I know for a fact, that most sprite animations involving fighting-based characters are like that.
Personally any other BGM would be more fitting, but it's just a personal opinion.
Overall, it's really well done. I hope, that you won't have to deal with a similar problem in the future.
Stupid things like that, make my hair go white.