Decent
I've read 'the Killing Joke', I don't think this was a very good representation of the story, because it leaves the main points out, like why he'd be wearing the red mask, and that there was waste in the water. I did like how you didn't just replicate the comic, even the director of 'Sin City' could get a few pointers from you in that respect.
The graphics were very ordinary and somewhat bland, and your own style wasn't shown, because the Joker was replicated from 'Batman: the Animated Series' and Batman looked pretty generic aswell. Gotham also looked very bland, but that first shot was okay.
The voice actors were awful, and I don't think 'the Mask of Phantasm' intro music is good for action.
I have a fairly strong bias when it comes to Batman, but I could still tell this was nothing special.
Oh, that run-cycle at the start was awesome.