They made a whole mode of of Lambent Humans. I just reached that part of the campaign last night with some friends (in Arcade mode mind you) and was completely taken by surprise. It totally came off as a mini zombie game. There were so many little tips of the hat to the genre in the dialog alone. Im praying they are working on this concept for DLC...cuz Im SOLD!!! It would be ridiculous for them to not make it, even if it were just a big goof on the current zombie craze it would still be heaps of fun and sell like gangbusters!!! BTW, sorry if this is a duplicate topic.