...but I honestly don't see the appeal in this.
Now I have no idea about Arkham City (one of the games that I have yet to play). But I honestly think that this could have been better.
The humor felt more forced or something. I mean, it was too random for my taste. Now I don't mind some random humor, but it does usually feel out of place. Sure, making a joke about the game itself is cliche unless cleverly written. But either way, some of the facial expressions and actions could have been done without.
I also felt the animation was sub-par or was rushed a bit. It looks as if you either didn't use enough frames or the actions went too fast.
The voice acting was terrible. The clown just sounded annoying and that Batman impression just sounded horrible.
Overall, I just couldn't find anything hilarious about this but only one or two things. But even those I just giggled a tiny bit. Try going a little less random next time.