I would not call it a full on horror. Sure, there are elements of horror in it, but just because it contains serial killers and werewolves doesn't mean it is a horror. It is a dark Halloween film that doesn't take itself too seriously. It is not scary, nor is it meant to be. It is just a fun movie that captures the spirit of Halloween.
If you found that scary, you have not watched real horror. So ignore that comment about it being horror Orangemaid. It's a decent film, worth seeing.