First time participating, let's see if I can make it through.
Movies are sorted in the order that I'll watch them in, not ranked.

Original list and rules

Rules and my choices:

6 countries:
United Kingdom: An American Werewolf in London, Venom, Taste of Fear, Dracula, Lifeforce, Saint Maud, Benny Loves You
Canada: Scanners
USA: Dead & Buried, In the Mouth of Madness, American Psycho II, It Comes at Night, Tales from the Hood, The People Under the Stairs, Ganja & Hess, Wendigo, Children of the Corn, The Birds, Poltergeist, Frankenstein, Jacob’s Ladder, Pumpkinhead
Denmark: Nightwatch
Japan: House, Shin Godzilla, Audition, Ringu
South Korea: Saw the Devil, The Wailing
Australia: The Loved Ones
France: Possession

8 decades:
1930s: Frankenstein
1950s: Dracula
1960s: Taste of Fear, The Birds
1970s: Ganja & Hess, House
1980s: Scanners, Possession, Dead & Buried, An American Werewolf in London, Venom, Poltergeist, Children of the Corn, Lifeforce, Pumpkinhead
1990s: Jacob's Ladder, The People Under the Stairs, Nightwatch, In the Mouth of Madness, Tales from the Hood, Ringu, Audition
2000s: Wendigo, American Psycho II, The Loved Ones
2010s: I Saw the Devil, The Wailing, Shin Godzilla, It Comes at Night, Saint Maud, Benny Loves You

2 folk horror:
Wendigo
Children of the Corn
Pumpkinhead

4 films from 1981:
Scanners
Possession
Dead & Buried
An American Werewolf in London
Venom

2 films from your birth year (1994):
Nightwatch
In the Mouth of Madness

2 haunted house films:
Poltergeist
House

The worst Part 2 that you haven't seen and can access:
American Psycho II: All American Girl

1 film set in the woods:
It Comes at Night

1 Kaiju or Kong film (not the new K v. G):
Shin Godzilla

2 Hammer films:
Taste of Fear
Dracula

3 films with a person of color as director or lead. (excluding Asian):
Tales from the Hood, The People Under the Stairs, Ganja & Hess

3 Asian horror films:
House, I Saw the Devil, Audition, Ringu, The Wailing

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