Apart from the graphics that still hold up in 2022 and still put games to shame, there isn't much i'd say good about this game. It has moments but it just lacks too much. You can tell this game doesn't have a good writer that knows how to capture the Batman and comic essence like Paul Dini. Gotham is bland and boring, pretty to look at but it's soo far away from being Gotham. The boss fights and the combat feel dumbed down and less menacing. The side missions are not side missions. You have to do them anyway before beating the game. Not to mention throwing in villains like Deacon Blackfire out of nowhere and using Deathstroke like a joke. The Joker scenes are good, the best part of the story tbh. As for the extra stuff like character models and challenge mode...they're something. The camera movement is very restrictive when trying to view a model, not to mention that it's pitch black unlike the other games so good luck seeing anything. (Speaking of camera, the photomode is horrible and insanely restricted). The challenge maps are total jokes. They have no campaign like in Origins or City, the characters have no intro lines and certain characters such as Azrael (Who's a Batman reskin and is even called Batman by the NPCs) or Red Hood are beyond bland. Red Hood has 2 total gadgets and Azrael has all of Batman's gadgets and uses all his moves without a single difference between the 2.
I guess I will stop here, that's about all the major stuff I could say about the game.