Original Challenge

Went only for films I haven't seen yet (+ Freddy Vs. Jason). Will rank them once I've seen them all.

There must be 31 films (but I didn't want to use the same film for multiple categories):

6 countries:
Italy: Deep Red
Japan: House
Korea: The Wailing
Spain: Piggy
UK: Enys Men
USA: Halloween II

8 decades:
1950s: House on Haunted Hill
1960s: Onibaba
1970s: Suspiria
1980s: Possession
1990s: The Blair Witch Project
2000s: Pulse
2010s: The Lighthouse
2020s: Talk to Me

2 post apocalyptic or natural disaster: related films:
The Happening
Mad God

1 film with Robert Englund:
Freddy vs. Jason

1 something is underground film:
The Descent

3 Satan/Devil centered films:
The Exorcist
The Omen
The Devil's Men (A title-based stretch)

1 Amicus film:
The House That Dripped Blood

The worst Dracula film (by Letterboxd rating) that you haven't seen and can access:
Dracula 3000 (Originally Dracula 3D)

1 LGBTQ+ connected film:
Raw

5 Films from:
The Fury
The Hills Have Eyes Part II
Vampire in Brooklyn
Psycho
The Lair of the White Worm

2 Peter Cushing films:
Shock Waves
The Vampire Lovers

1 film based on a work of or invoking the name Bram Stoker:
The Last Voyage of the Demeter

1 film based on a Clive Barker story:
Hellbound: Hellraiser II

1 film that was released the year that you turned 10:
Silent Hill: Revelation

Mario Bava:
Blood and Black Lace

1 film with an 'x' in the title:
Xtro

And 1 Tobe Hooper Film (There must ALWAYS be a Hooper film):
Lifeforce