The combat has been the best part of the game thus far, but it does tend to get frustrating. The combat is really well done, but it rewards patience and timing, so when I screw up and lose my combo meter because of a bit of button mashing, it gets frustrating.
Because of the enclosed confines of the last fight, the camera takes a dump on you and the controls seem to decided to that you need to move as if you are walking in a swamp. So about half-hour, forty-five minutes later I am no closer to getting my hands on the Joker than I was when I started playing tonight. And for that I am frustrated.