Something about the the BioShock "Challenge Room" downloadable content seems wrong. It's not the fact that it's DLC. Kotaku appreciates 2K trying to get more mileage out of the blockbuster to distract people from the fact that they haven't given them BioShock 2 yet. And it's not exactly the fact that the Challenge Room DLC is a PlayStation 3 exclusive –- although that doesn't seem quite fair to Xbox 360 fans that need Achievements as much as PS3 fans need Trophies.
What's really bothering them is the lack of fiction. They are not asking for a new ending or a tacked-on chapter that somehow changes the fantastic story of BioShock – why fix something that isn't broken, right? It's just that what made BioShock special was the story. Oh, sure, the graphics were spiffy, the art style was cool and the game really does play well (not too glitchy or difficult to manage). But BioShock without its story is like a Twinkie without its filling – still somewhat tasty, but hollow and far less satisfying.