full criteria and background from cinemonster here

There must be 31 horror films

6 countries (other than Italy or US)
1. Canada: American Psycho & Humanist Vampire Seeking Consenting Suicidal Person & The Conspiracy
2. Japan: Helter Skelter
3. Mexico: Curse of the Mayans
4. Russia: Abraham Lincoln: Vampire Hunter
5. Spain: Crypt of the Vampire
6. Sweden: Häxan
7. UK: World War Z

9 decades
1920s: Häxan
1930s: The Wizard of Oz/White Zombie/
1940s: Cat People
1960s: Crypt of the Vampire/Night of the Living Dead
1980s: Cat People/Dreamscape
1990s: Army of Darkness/The Stand/Vampire in Brooklyn
2000s: American Psycho
2010s: 90210 Shark Attack/Abraham Lincoln: Vampire Hunter/The Conspiracy/Curse of the Mayans/DeadHeads/Helter Skelter/The Invitation/World War Z
2020s: The Blackening/Humanist Vampire Seeking Consenting Suicidal Person/Sinners/Queens of the Dead

5 Zombie Films: Army of Darkness/DeadHeads/Night of the Living Dead/White Zombie/World War Z

3 cult or conspiracy horror films: The Conspiracy/Deadheads/The Invitation

1 film from a Black director with a Black lead: The Blackening

1 film from a Mexican or Central American director: Curse of the Mayans

1 Canadian film: Humanist Vampire Seeking Consenting Suicidal Person

1 Russian or former Russian state film: Abraham Lincoln: Vampire Hunter

The most popular film from the 1940s that you haven't seen and can access: Cat People

2 Post Apocalyptic horror films: The Stand & World War Z

1 Film with dreams or a dream as part of the plot: Dreamscape

1 The animals are pissed at us film: 90210 Shark Attack

1 Silent film: Häxan

4 based on Novels: American Psycho/Helter Skelter/The Stand/White Zombie

Any film from THIS list that you haven't seen: Happy Death Day

1 Ernesto Gastaldi written film: Crypt of the Vampire

1 film from 1932: White Zombie

I have never made a specific film a part of this before, but WIZARD of OZ ('39)

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