Good, but a bit confusing and short!
Overall it was a good flash, however, it was confusing at first when shadow splits in two, and it leaves the viewers to guess what's going on. Also, it's a shame that is was'nt longer!
I liked the good atmosphere of it all, but the fight was pretty boring and there just wasn't enough action.
You should make it into a story and make the sprites move and fight faster.
That was boring and... hmmm.. Cliché, i hate Sprited stuff, there are lots of Sonic vs. X Gay Character, the sound wasn't cool, violence was, just uh, and it was pretty funny the preloader.
Some of the effects were over-dramatic and took too long- for example, the Shadow glowing and the Sonic flying up into the air- and the Dragonball Z thing was... To put it simply, cliché. I got really bored watching Sonic fly up into the air and up and up and up- and I get the feeling that you're not too good with sprites: they sort of move and shift a little even when they're supposed to be standing still and Tails seemed to be hovering a little off the ground when with Shadow.
Didn't like it..plain and simple..Shadow too strong....that is ok in some movies but when it is one on one....it is just boring.