I bought some Arkham City DLC in the last Steam sale and finally got around to checking it out. Or trying to. They DLC was showing against the game in Steam, yet I couldn't find it anywhere in game. I ...

I don't know about the disc version, but the Steam version definitely does not run the GfWL installer. If you didn't have GfWL already on your system then I'm not surprised in the least that it ...