Building environments for Arkham City was a team effort. There is probably not a single level in the game that hasn't been worked on by at least two or more artists. With this in mind, I'm only showing levels I was in charge of or did a considerable amount of work on it. Even then, it was still very much a team effort with additional assets and support by other environment, prop and FX artists.
As an Environment Artist i worked in 3ds max, Photoshop, Zbrush and Unreal to create compelling and atmospheric environments rich in detail while making sure that the visuals integrate seamlessly with the game play. I also did a good amount of lighting on the majority of the levels alongside our lighting artist.