Not terrible...
But I think you should be putting this on IFILM or Atomfilms, so you don't have to enter it as a Flash file.
Flash files aren't great for presenting AVIs in clear format, and this piece shouldn't have to suffer visually because of the limitations of Flash.
All the other criticisms (rough/jerky animation, soso coreography, too many matrix effects) are valid.
So I think you should go back to the drawing board, flesh out what kind of scenario you want (its just 2 random guys fighting for no reason at the moment), and once you have a rough cut (good editing and pacing for the story) THEN go for a Longer version.
Just my 2 cents...