Clive Barker's 'Hellraiser' is a classic, and I enjoyed the 'Cabal' novel on which this film was based - unfortuantely 'Nightbreed' is a bit of a mess, and has dated badly. This fantasy/horror mix works on the page, but Barker clearly didn't have the money, actors or budget to make it work on screen. The lead actor has all the charisma of a piece of wood, and most of the cast are just as inept (only David Cronenberg comes out with his dignity intact), though none of them are helped by the crass dialogue. It's ambitious in scope, but ultimately comes across as a very silly monster movie. That said, it can be reasonably entertaining in a ludicrous 'so bad it's good' kind of way, especially when the local police suddenly turn into a gung-ho military outfit and start blowing people up for no good reason. With armies of rubbery monsters, cheesy dialogue, and enough 80's hairspray to rip a hole in the ozone layer, this is closer to the ludicrous 'Rawhead Rex' than 'Hellraiser', and is best enjoyed in the same spirit.
[NB - I have only seen the 'Directors Cut' of this film - maybe the Theatrical Cut is a vast improvement, though I kinda doubt it. ]
Yes, the main character has a mullet, but this film still stands up for me. I'm really interested in alien/monster prosthetics and make up and, for it's time, this film delivers in spades, with lots of different creatures.
It's 30 years old, but cut it some slack and it's still fun.