I've never found L4D to be particularly frightening - the different between say, L4D and Silent Hill, is that in L4D, I can basically kill every zombie I see with either my almost infinite ammo shotgun or, if worse coems to worse, my infinite ammo pistols. And if somebody dies, we can just bring them back to life in a magic closet later. Whereas in Silent Hill oh my god what is that what do I even agh god it's spitting shit at me OH MY GOD THERE IS ANOTHER ONE BEHIND ME OH MY FUCK AAAHHHHHHHH HAVE YOU SEEN MY DAUGHTER