6 countries
Japan -- Cure
Italy - Opera
South Korea - Thirst
East Germany - Possession

8 decades
1930s - Bride of Frankenstein
1940s - The Wolfman
1970s -- Blacula
1980s - The Keep
1990s - The Faculty
2000s - Saw
2010s - Tucker & Dale vs. Evil

2 insect centered films
Mimic

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

2 animated films
Angel's Egg
Mad God

1 bloodthirsty old person/people film
The Visit

2 1970s regional US films (Thanks Sean Young)
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 German Silent
Nosferatu

5 Films from David Cronenberg, Ti West, Bill Rebane, Charles B. Pierce, William Grefe and/or Joy N. Houck Jr.
The House of the Devil - dir. Ti West
The Dead Zone - dir. David Cronenberg
The Town That Dreaded Sundown - dir. Charles B. Pierce

2 Christopher Lee films
The Wicker Man
Horror of Dracula

1 film with a musician or band in it (A real life musician or band)
1 Stephen King adaptation that is not the first go around.
Pet Sematary (2019)

1 Lon Chaney film. (NOT JR)

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