User blog comment:Teddy Picker/Last Light Multiplayer/@comment-3177390-20111019050943/@comment-4623077-20111019142116

I believe there will be a co op mode, and I'm guessing it will be as you described, fending off waves of mutants. As for multiplayer itself, a game mode reminiscent of L4D would be really cool. Think about certain levels, on the surface, maybe you could be a Watcher, or a Demon, or in the tunnels, Nosalis, lurkers, and maybe those big mutants Artyom was fighting in one of the gameplay trailers. And possibly a Library level, with librarians and black librarians? That would be amazing.