It seems like it might as far as gadgets and game play.
You only get the basics of the basics in the demo. Batarang, grappling gun, detective mode, and I think thats it. The combat system seems pretty cool. It's simple, yet you can do lots of different combos. Like, depending on what the enemy does you can counter in different ways. Or depending on how you are positioned to attack you can do something cool. Like if you sneak up behind someone and hit the y button, batman will punch whoever in the small of their back, then I guess you can say they lurch backward, and he grabs them by the neck and chokes them out. It's all quite dope. I've seen a ton for grdgets and what have you in the videos. So, I'm sure there is lots to do. There is some cool unlockable character bios with interview tapes and such. I listened to both the Joker ones. The asylum seems like a really large compound and it seems varied. Actually walking around looking for clues and such is really cool too.
I'm kind of wondering if it has more than one ending. Like if a certain guard dies, or you take a different path or something.
It's dope though. Check it out if you have the means.