Kinda seen it already...
Lotsa people do fighting scenes like this cuz they are so easy to find resources for so it's kinda redundant. You didn't credit the music you used (who it's by and where it's from). That's always a big thing for me when I watch flashes- did they credit the proper people other than themselves for finding the sounds/songs? The text in places was not put up long enough to read- even for a fast reader like me. Granted I don't know how to use sprites, but I do know a bit about copy-and-paste tricks to minimize effort or tediousness. It seems like you used that a few times to make it easier to make a flash of this length.
One suggestion: come up with a unique plot that hasn't been done by many people and you might have something good.