Great work! Needs polish
I think your style of art is great, and very well suited for Flash, and while you generally seem to have a good eye for cinematic punch there were a few things that killed it for me. The biggest thing throughout was the slow-motion; it was too slow, and lasted too long during the action sequences, which made it look sort of choppy. The rock music didn't fit, and was a real mood-killer. The fade out at the end was also a little choppy. Spidey and TMNT made me chuckle a little, but again, didn't really fit the mood, or anything to the plot.
Hope this helps!