I'm about haflway through it, feels kind of too enclosed and too small to enjoy, It's like when they went from the hugely open world of San Andreas to GTA IV, only now from IV to this in terms of size. I dont think it's that small, but it feels that way, add to that a very weird control scheme that is severely biased to consoles. Also the fighting gets really tedious, it's just not a fluid as Arkham is, they want you to use weird combos but it just feels unnecessarily complicated, whereas in Arkham it was a cinch to pull off dozen stringed combos if you had the timing down.
I dont know about the real HK, but the lack of guns and seriously scripted missions add to the boredom. You dont need guns to make a game, Arkham is a perfect example, but Arkahm makes up for it in oh so many ways. Im leaning towards giving up on it because of boredom :/