Good, just a few things
Graphics - You're drawings were pretty good. Though the side view of the policemen and robbers were a little poor. I myself draw the same way as you do, though you're other drawings were pretty good.
Style - Pure POSSUM with an Awesome. I loved the cinematic views
Sound - My most picky part. Though in you're case you are fine. Shirley Walker suprised the fuck out of me when she wrote the score to Batman Mask of the Phantasm. It was true to Danny Elfman's and Elliot Goldenthals score. I love the choir too it. She totally knows her shit.
But....... whomever did the voice to the joker................Not only was the acting bad, but the voice. Whomever it was he had one high point, and it only lasted a second, it was when he was laughing at the end and his voice hit a high point - that was great. Though the extened laughing was a bit awkward, it wouldnt have been if you had a better actor.
Interactivety/ humor duh - though I gave you a 3 because of the Jokers voice.
Overall - You deserve a 10 my friend, like the last reviewer this is a masterpiece! Truly great. You have my respect and I hope you make more batman themed movies. Maybe even others. Dont let your talent go to waste. I wish I was that good.