Not bad.
I have to agree with some of the others, that something is missing. I by no means underestimate the difficulty of frame by frame animation, but what you have here seems like its missing a few high quality shots. Almost all action is implied. This works as long as you make up for it with demonstrated action here and there (see any reasonably budgeted anime)
I also feel that several shots hold for far too long, such as the explosion. Long hold shots are very hard to get right (I don't think I've ever nailed it). Too short, and it feels strange, too long and its distracting and irritating.
In the future, I hope you spend a little more time on a few high content scenes, instead of several comic book style action shots with minimized movement. I applaud your music choice though, and your style is on point.