What's the title of this 80's horror film?

Hey, I'm looking for this movie that I saw when I was very very young that was probably made sometime in the 80's early early 90's. It's a film very similar to Night of the Demons (But it isn't nor any of the sequels). All I really remember are a few vague parts that took place in the movie I hope my descriptions can be of some help. I know that there was some kind of party involved and that demons or demon like creatures were everywhere. I know that one of the demons had that were monster like. I know that there was some sort of she- demon like Angela but she seemed was more scarier (at least from my memory). I also know that at the end of the movie the male main character was dreaming or he may not have been dreaming but him and his girlfriend was about to have and his girlfriend ended up turning into the female main demon. I don't know much else but I've been looking for the title to this movie and if you could tell me I'd forever be in debt to you.....