surprising. I didn't think superhero games sold anymore

Spoiler:

Judging by the end of the game with references to Harvey Dent robbing the bank and Scarecrow getting his hands on the titan, I think it's a pretty safe bet we can expect a sequel.

A great game - highly recommended. Very polished throughout and while there are a few niggles, given the approach and effort they are fairly minimal, and just mean we're likely to see an even better Batman game in the future.

A lesson for all those who use and abuse franchises.

Good Game + Good Franchise = SALE

^^
Boss battles are erratic in nature and fall prey to usual boss battle syndrome - once you work out the repeat/rinse formula to beat them its an exercise in dull repetition (on a side note, can we ditch boss battles?)

Some textures are a little bland here and there

Suffers a little bit from Uncharted syndrome - how many similar thugs are there on this island for me to fight?

You don't get to use vehicles - I want to drive the batmobile.

The detective side could have been a little stronger - it was there, but spoon fed to you.

However, the other 92% of the game is great, which is why I'd rate it 92% myself. I have to especially mention Mark Hamill's voice work as the Joker - simply wonderful and one of the best voice performances for a game ever.