See: The Twelfth of Hooptober

6 countries (other than Italy or US)
Germany - Vampyros Lesbos (1971)
France - The Living Dead Girl (1982)
Japan - Tetsuo II: Body Hammer (1992)
India - Bhool Bhulaiyaa (2007) ☑️
Hong Kong - A Chinese Ghost Story (1987)
Canada - The Dead Zone (1983)

9 decades
1920s - Nosferatu (1922)
1930s - Bride of Frankenstein (1935)
1940s - Cat People (1942)
1950s - Godzilla (1954)
1960s - Jigoku (1960)
1970s - Phantom Paradise (1974)
1980s - The Evil Dead (1981)
1990s - Blade (1998) ☑️
2000s - Snakes on a Plane (2006)

5 zombie films 
Night of the Living Dead (1968) ☑️
Paranorman (2012) ☑️
Scooby-Doo on Zombie Island (1998)
Warm Bodies (2013)
Resident Evil (2002)

3 cult or conspiracy horror films
Perfect Blue (1997) ☑️
Videodrome (1983)
Suspiria (1977)

1 film from a Black director with a Black lead
Tales from the Hood (1995)

1 film from a Mexican or Central American director
The Devil’s Backbone (2001)

1 Canadian film
Dead Ringers (1988) ☑️

1 former Soviet state film
Dark Waters (1993)

The most popular film from the 1940s that you haven't seen and can access
Cat People (1942)

2 Post apocalyptic horror films
A Visitor to a Museum (1989)
Resident Evil (2002)

1 Film with dreams or a dream as part of the plot
A Nightmare on Elm Street (1984)

1 The animals are pissed at us film
Snakes on a Plane (2006)

1 silent film
The Cabinet of Dr. Calgari (1920)

4 based on novels
The Wizard of Oz (1939) ☑️
Godzilla (1954)
Frankenstein (1931) ☑️
Candyman (1992)

Any film from THIS list that you haven't seen
An American Werewolf in London (1981) ☑️

1 Ernesto Gastaldi written film
Libido (1965)

1 film from 1932
Vampyr (1932)

WIZARD of OZ ('39)
The Wizard of Oz (1939) ☑️

1 Tobe Hooper film
Lifeforce (1985)

Supplemental horror film(s) to hit 31
Night of the Living Dead (1968) ☑️
Eraserhead (1977)