First of all if you are looking for the best Batman game on any system of any era, THIS IS IT!
I have seen other reviews compare this game to Splinter Cell. Yes, this game does have a Splinter Cell feel to it. It focuses on stealth to accomplish most of the goals. Unlike Splinter Cell, Batman carries no guns and taking weapons fire is lethal with a few shots. The importance of stealth is amplified greatly in Batman.
Another aspect is the addition of fear. Playing on the movie's main theme of Scarecrow's hallucinogen. Batman also uses his environment around him to cause fear in his enemies. When you are forced to fight, the more fear you cause, the easier the enemies are to defeat. Some reviews here make light of this aspect. But they miss the point of it's use within the game.
The levels themselves are essentially puzzle based, though are well hidden in plain sight, as to blend into the level structure. This reminds me of Prince of Persia. In other words, everything that is interactive in the game actually looks like it belongs there. There are 10 levels in total, 2 of which are driving levels.
Which brings me to the down part of the game for me. The driving levels seem to be throw-ins. On top of which, they are clones of Burnout 3's "Road-Rage" mode. Not a bad thing, but it's too obvious. The big blinking arrows, give it away. They are easily the most disappointing part of the game.
While not much replay value. You can still unlock movie clips, interviews, classic Batsuits, Batmobile mini-game, and every notable bad guy ends up in the Gallery of Fear.
The game follows the movie. Even using movie clips to help the game along. The game even features the voices of the main cast to help with the feel. The character faces are modeled after the real life actors. You'll recognize Bale, Neeson, etc. In essence, that is what this game is, a movie companion. So your not playing this game because of the story. You've seen it. Your playing it because you are a fan.