Two face (some parts I like, some I don´t)
The Riddler puzzles, the feel of the game and some gameplay parts. It felt very batman-y, being dark but funny.
I didn´t like:
The fighting parts of the game, especially towards the end. I don´t like button hitting contest, and fighting without strategies (press Y when someone is behind you) are dull. Since the "X,X,Y,Y,X,X,why? why?" parts of the game is basically the entire game I played for the story alone.