Halloween used to come only once a year but now that all the creatures have broken out Halloween is every day. Creatures from deep within our minds are running around, scaring people until they die. Some humans still don't know about the Halloween creatures but some do. Some of the humans go out and even try to kill the creatures.

You can be a creature of Halloween or a human. Some of the creatures go human by day and turn at night but some stay themselves at all times, that's up to you. Keep in mind, Crossroads Demons can only be summoned at crossroads and that's the only time they are there and Hell Hounds can only be around in the last few days of an end of a human's deal with a Crossroads Demon. So they aren't in the story too much.

About and how to kill some of the creatures:
(Holy water will hurt any of the creatures and keep them back. A line or circle salt will create a block they can't cross.)
Vampires: cut their heads off (Dead man's blood will incapacitate them)
Werewolves: stab in the heart with something sliver or shoot with a sliver bullet
Witches: burn
Ghosts: salt and burn the bones
Demons: capture in a Devil's trap and exorcise
Crossroads Demons: entities that make formal agreements or bargains with humans, granting any wish in exchange for claiming their life and soul at a fixed point in the future (killed in the same way as other Demons)
Hell Hounds: commonly appear to kill a person who has made a deal with a Crossroads Demon allowing the person's soul to be harvested by hell. In the days proceeding the end of a person's time, they will appear to the victim in dreams. The person will also hallucinate, and be able to see the true face of demons when they are possessing humans. Hell Hounds can only be seen by the person they are after and they are at the command of Demons (killed by each other or an extensive amount of fatal wounds)