In episode 7 of Breaking Bad season 4, "Problem Dog", you can see one of the main characters (Jesse Pinkman) playing a video game around 00:40:
It looks to me like a first person shooter. The enemies bald guys with a sickle, and some of them also wear scarves that cover the lower half of their head. I believe the setting is rather new, since I can see graffiti on the walls. The part of game shown is in wet underground rooms.
What is the name of this game he's playing?