This is pretty good man :)
The ending was a little overly open and I felt dark vader's ruler has a little to of high-pitched a voice. And batman has extra armor under lighter armor, not the other way around. ANYWHO good job!
Seems that you need a better ending, however, the final ending was good :D He watched them alright, watched them burn...
Need to work on sound/animation, but first the work on the content. just my opinion