Cooking something
Well, to start, the title should not be called "Sword Fighter Extreme", it totally misleads people. Next time you upload something as a test for feedback, you should label it with the word test or something to indicate that it is not complete.
Like I saw other people say, the background is boring, it could have used at least a temporary background that looked like a scene. When you do finally complete the whole flash, it would help to have some background animations unlike most of the flashes of this nature.
It is a little choppy, if you search on google, you can find some methods on how to make animations less choppy.
Good luck!