QUICK EASY RULES:

There must be 31 films:

6 countries:

Tokyo Gore Police (Japan)
The Sadness (Taiwan)
Successive Slidings of Pleasure (France)
Hatching (Finland)
Kill It and Leave This Town (Poland)
Dream Home (Hong Kong)

8 decades:

Genuine (1920s)
Dementia (1950s)
Phantasm (1970s)
Videodrome (1980s)
301/302 (1990s)
The Amityville Horror (2000s)
Mayhem (2010s)
Nocturne (2020s)

2 insect centered films:

The Wasp Woman
Them!

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

Screamers

2 animated films:

Felidae
Lily C.A.T.

1 bloodthirsty old person/people film:

Phantasm

2 1970s regional US films (Thanks Sean Young):

The Town That Dreaded Sundown
The Gore Gore Girls

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

Howling: New Moon Rising

1 German Silent:

Genuine

5 Films from Cronenberg, Ti West, Bill Rebane, Charles B. Pierce, William Grefe and/or Joy N. Houck Jr.:

Videodrome (Cronenberg)
The Innkeepers (West)
The Town That Dreaded Sundown (Pierce)
Stanley (Grefe)
The Night of Bloody Horror (Houck Jr.)

2 Christopher Lee films:

To The Devil A Daughter
Extraordinary Tales

1 film with a musician or band in it:

Tales From The Darkside: The Movie

1 Stephen King adaptation that is not the first go around.:

Pet Sematary

1 Lon Chaney film.:

The Unknown

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

The Texas Chainsaw Massacre 2