It is so bad its good. I didn't make it through the opening credits before I said out loud, "this is so 80s it hurts." Worth the watch for the cult classic but also kinda enjoyable in a weird way.
It wasnt the best acting or anything but I think it was a good cosmic horror movie. There is something about cosmic horror and lovecraft that only translates to B-Rate movies. I think it is the idea that won't be a happy ending as well as horror that is unimaginable. Dagon, I think, does a great job. If you enjoy Lovecraft and cosmic horror, you'll enjoy Dagon.