I didn't like this, unfortunately (spoilers)
- The Riddler was a weak antagonist and I didn't care about his motivations (I wouldn't be surprised if Hush / Tommy Elliot was supposed to be the villain in the first draft of the script). Also, Paul Dano's acting was dreadful during his scenes in Arkham. Overall, I was reminded less of Fincher's 'Zodiac' and more of Schumacher's comically grim-dark '8MM'.
- The film felt overlong (how many times did they return to the Iceberg Lounge?) and shuddered to a halt after Nashton turned himself in.
- Batman, generally, was disappointing. The way he just waded through machine gun and shotgun fire due to his armour (like Tony Stark escaping the terrorist cell in the first 'Iron Man' film) instead of using stealth. The amount of times he allowed himself to be surrounded in rooms of thugs and cops (later in the film, we see him dragged to the ground by two men). The way Jim Gordon allowed him to walk into active crime scenes amongst the police officers and then fiddle around with evidence. For someone who described himself as a "shadow", Batman was very visible and vulnerable.
- It had the same issue as Superman in 'Batman vs. Superman: Dawn of Justice'. Batman has been active for two years, but we don't get a sense of what he has achieved or how the public view him. Some criminals are scared of him, but some don't even recognize him or take him seriously? Why does Jim Gordon give him the run of every crime scene even though other officers call him a freak? Is he the one who put the Joker in Arkham?
- The action scenes had less impact than Nolan's trilogy. Nolan's hand-to-hand scenes weren't great (although they improved) but there was always a massive amount of emotional heft behind Batman taking on, say, Carmine Falcone or Bane.
- The dialogue was clunky. "Could a falcon also be a rat?" etc.
However, I did enjoy Colin Farrell's Penguin and Zoe Kravitz's Catwoman - I'd be interested in watching their spin-off series / movies - and Robert Pattinson was decent as Bruce Wayne in his civilian identity. I also liked how it dug a little more deeply into the history of the Gotham families.