Knightmare for the Amiga. It was a dungeon crawler, like Dungeon Master, but those little elf/gnome/goblin things really freaked me out...
Failing that, GreySlayer, also for the Amiga, but that's arguably also horror, albiet in a somewhat more primative form.
Failing that, GreySlayer, also for the Amiga, but that's arguably also horror, albiet in a somewhat more primative form.