I am new to the horror genre and I’m probably going to hate myself for attempting this. But let's see how it goes...smh

10 'Anniversary Films' (Release years end in an 8, excluding 2018):
Let the Right One In (2008)
Rosemary’s Baby (1968)
The Vanishing (1988)
Night of the Living Dead (1968)
Dawn of the Dead (1978)
Dracula (1958)
Dead Ringers (1988)
Halloween (1978)
Invasion of the Body Snatchers (1978)
The Fly (1958)

6 countries:
Let the Right One In (Sweden)
What We Do in the Shadows (New Zealand)
28 Days Later (UK)
Funny Games (Austria)
Suspira (Italy)
The Cabinet of Dr. Caligari (Germany)

6 decades:
Dracula (1958)
Psycho (1960)
Suspira (1977)
The Vanishing (1988)
Funny Games (1997)
Funny Games Remake (2007)

6 films from before 1970:
Psycho (1960)
Rosemary’s Baby (1968)
Wait Until Dark (1967)
Dracula (1958)
The Curse of Frankenstein (1957)
The Cabinet of Dr. Caligari (1920)

6 films from the following: Romero, Cronenberg, Clive Barker, Terence Fisher, Sergio Martino, Bill Lustig (mix-and-match, or all one):
Night of the Living Dead (Romero)
Dawn of the Dead (Romero)
The Fly (Cronenberg)
Dead Ringers (Cronenberg)
Dracula (Fisher)
The Curse of Frankenstein (Fisher)

2 flying things that kill you films:
The Birds
The Fly

1 silent film as a tribute to A Quiet Place:
The Cabinet of Dr. Caligari

1 aquatic menace film as a tribute to Meg:
Creature from the Black Lagoon

2 women directed films:
A Girl Walks Home Alone at Night
The Invitation

1 inanimate object comes alive film:
Rubber

1 film with Barbara Crampton in it:
Re-Animator

And 2 Tobe Hooper Films (There must ALWAYS be a Hooper film):
Poltergeist
The Texas Chainsaw Massacre

Extra:
Alien
The Cabin in the Woods
The Thing