I liked Bioshock 2. Combat was better, and the story wasn't bad, it just felt a bit derivative. They had interesting ideas that didn't quite match what they were hoping for. But they also put effort into it, had some interesting concepts, and it was interesting to see a sort of counterpoint to the first game, criticising extremist views in the opposite direction of Andrew Ryan. Overall, it wasn't as good as the first, but I think it was a solidly good shooter, hovering around the better games of the year, and really only suffered because Bioshock kind of felt like the first modern incarnation of the philosophically relevant modern AAA game, and Bioshock 2 therefore had a nigh impossible act to follow.