My first time attempting this, big ol' planned list subject to change.

Rules:

6 Countries (other than Italy or US):
Perfect Blue (Japan), Shivers (Canada), Night Watch (Russia), UK (Blood on Satan's Claw), South Korea (A Tale of Two Sisters), Australia (The Babadook)

9 Decades:
The Hunchback of Notre Dame (1920s), Doctor X (1930s), The Picture of Dorian Grey (1945), Burn Witch Burn (1960s), Phantasm (1970s), Day of the Dead (1980s), Perfect Blue (1990s), Ju-On: The Grudge 2 (2000s), The Babadook (2010s)

5 Zombie Films:
City of the Living Dead, Return of the Living Dead, Day of the Dead, The Serpent and the Rainbow, Pontypool

3 cult or conspiracy horror films:
The Blood on Satan's Claw, The Devil Rides Out, Apostle

1 film from a Black director with a Black lead:
Blacula

1 film from a Mexican or Central American director:
Crimson Peak

1 Canadian film:
Shivers

1 Russian or former Russian state film:
Night Watch

The most popular film from the 1940s that you haven't seen:
The Picture of Dorian Grey

2 Post Apocalyptic horror films:
Day of the Dead, Mad God

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

1 The animals are pissed at us film:
Day of the Animals

1 Silent film:
The Hunchback of Notre Dame

Any film from THIS list that you haven't seen:
Day of the Animals

4 based on Novels:
The Hunchback of Notre Dame, The Picture of Dorian Grey, Salem's Lot, The Ruins

1 Ernesto Gastaldi written film:
The Whip and the Body

1 film from 1932:
Doctor X

Specific film:
The Wizard of Oz ('39)

1 Tobe Hooper film:
Salem's Lot

EXTRA WORK:
Burn Witch Burn, German Chainsaw Massacre & Trick or Treat.