I no not if this is a bug, i am out side the power station after cleaning out the inside of enemy and have just found my way to the first ladder, died a few times getting here, when suddenly I had monos coming through the guttering and sliding down the wall, I attack them and some just walked back up the building side, now I don't mind fighting hoards of enemy but I would like a fighting chance, is this a bug or is it by design..watching ones back, a hole new meaning.