Why no co-op ? That would be interesting as hell, even for someone like me who dislikes horror/zombie crap...... 
Co-op always takes away the main core of horror games, to be afraid. I've rarely played any horror game that actually worked in co-op, there is something about playing all by yourself that makes the experience so much greater.
Take Dead Island for example, there was some half-scary moments and I played it all solo, then I replayed it with a friend, we were laughing instead of being scared in that exact same scene.
