The manual gives me some strong Clive Barker's Undying-vibes. Games like this one are the reason why I purchased a TheC64 Maxi. Well done!
edit: A very entertaining game, I really enjoy the exploration aspect. One thing: I find it a bit unfortunate to use the "Necronomicon" as a story premise for this game, it's way too overused in popular culture, and it should have been something more in the vein of celtic culture to fit the story. Just my two cents and only a detail. Other than that a very pleasurable experience. My map is already filled with anotations. :)