Outstanding
The characters were all amazing to joker in paticular was amazing, Mark Hamil's voice over was nothing short of hilarious as was harley more often than not. Camera angle's were brilliant except for the boss fight with poison ivy i felt the camer angle then made the fight very akward.
Upgrading gadgets was simple but very satisfying and you have access to varied arsenal which ranges from making things slightly easier to giving you a clear advantage.
Thing i loved best was the dark and gothic settings and art style i felt suited the game and batman universe perfectly, this is what the Dark Knight is at his very best. A tremendous job by the developers at Rocksteady!