Following Cinemonster’s criteria here are my films:

31 films

6 countries
The Lure (Poland), Penninsula (South Korea), A Girl Walks Home Alone at Night (Iran), The Innocents (Norway - I think), Climax (France), The Similars (Spain)

8 decades
The Boogeyman (2023), Resolution (2012), Red Eye (2006), Candyman (1992), Crimes of Passion (1984), Carrie (1976), Psycho (1960), Invasion of the Bodysnatchers (1956)

2 post apocalyptic or natural disaster related films
Penninsula, 28 Weeks Later

1 film with Robert Englund
A Nightmare on Elm Street Part 2: Freddy’s Revenge

1 something is underground film
Creep (2004)

3 Satan/Devil centered films
The Devils Candy, Hereditary, The Wailing

1 Amicus film
Asylum

The worst Dracula film (by Letterboxd rating) that you haven't seen and can access.
Dracula 3000

1 LGBTQ+ connected film
They/Them

5 Films from De Palma, Wes Craven, Ken Russell, Hitchcock and/or Moorhead & Benson.
Carrie, Red Eye, Crimes of Passion, Psycho, Resolution

2 Peter Cushing films
The House That Dripped Blood, Asylum

1 film based on a work of or invoking the name Bram Stoker
Renfield

1 film based on a Clive Barker story
Candyman

1 film that was released the year that you turned 10
Don’t Be Afraid of the Dark

1 Mario Bava film.
Kill, Baby… Kill!

1 film with an 'x' in the title
Climax

And 1 Tobe Hooper Film (There must ALWAYS be a Hooper film)
Texas Chainsaw Massacre