There must be 31 films
6 countries
Japan: Cure ✔️
China: Encounters of the Spooky Kind✔️
Poland: The Lure✔️
Spain: the Last Circus✔️
Brazil: At Midnight I will Take Your Soul✔️
Sweden: Let the Right One In✔️

8 decades
40s: Cat People✔️
50s: Curse of the Demon✔️
60s: Kill, Baby, Kill✔️
70s: Carrie
80s: Deadly Spawn✔️
90s: Tales from the Hood✔️
2000s: Let the Right One In✔️
2010s: Black Death✔️

2 insect centered films
1. The Fly (1958)✔️
2. Nest (1987)✔️

1 horror film set in space or the future (relative to when it was released)
1. Hardware✔️

2 animated films
1. Wicked City
2. Monster House✔️

1 bloodthirsty old person/people film
1. The Visit✔️

2 1970s regional US films (Thanks Sean Young)
1. Multiple Maniacs✔️
2. Scalpel ✔️

The worst horror sequel from the 1990s that you haven't seen and can access. (I realize that this will take a little work)
1. Tale of the Mummy✔️

1 German Silent
1. Faust✔️

5 Films from David Cronenberg, Ti West, Bill Rebane, Charles B. Pierce, William Grefe and/or Joy N. Houck Jr.
Cronenberg: The Brood✔️
West: Pearl✔️
West: House of the Devil✔️
Rebane: Blood Harvest✔️
Pierce: The Evictors✔️

2 Christopher Lee films
1. Horror Express✔️
2. the Hound of the Baskerville ✔️

1 film with a musician or band in it (A real life musician or band)
David Bowie: the Hunger✔️

1 Stephen King adaptation that is not the first go around.
1. Carrie (2002)✔️

1 Lon Chaney film.
Phantom of the Opera (1925)

1 Tobe Hooper Movie
1. Salem's Lot✔️

Original list