Not Bad
Overall, this piece isn't too shabby. Though your pacing is a bit too slow, your sense of visual drama is pretty good. The gun flash in Batman's eye was pretty cool. The animation when Batman hits the thug and takes his mask off was excellent! Even the cops getting hit looked nice and smooth.
My only crit of this piece is that you really need to pay attention to what you're doing, information-wise. You misspelled "Gotham", "Batman" is one word and the composer is Danny Elfman, not John Williams.
I look forward to seeing more from you and watching you improve from project to project. Good luck!