I've been playing Arkham Asylum for the past few days now and I'm pretty impressed. Combat flows rather well but when playing it hard its not the wisest move to get into fights with enemies so you've got to try and stalk around and silently take them down one by one. Seeing Batman's outfit getting damaged over the course of the night is also pretty nifty. Character designs are great, I love the look of the Scarecrow. The riddlers puzzles are one of the best things about the game. I'm sure they'll be the thing that'll keep you playing it long after you've beaten the game.