I would not choose for pure horror, cause there are already alot of those games recently (all those Amnesia clones) and is kindy difficult to do when you can only see a few pixels (= less scary). But some mix between action and suspense/horror sounds best. Perhaps something like the old Aliens vs Predator game (when playing as a marine) but with monsters instead of aliens and pixellated?
Maybe this give you some ideas (when doom and avp get a child):
http://www.moddb.com/mods/acm-2014