my list for Cinemonster's Hooptober Cinco: Your Terror is a Locked Room and Only I Have the Key

10 'Anniversary Films' (Release years end in an 8, excluding 2018)
🖤The Blob (1958)
🖤The Crawling Eye (1958)
🖤Dead Ringers (1988)
🖤Fiend Without a Face (1958)
🖤Halloween (1978)
🖤Halloween 4: The Return of Michael Meyers (1988)
🖤Jaws 2 (1978)
🖤Killer's Moon (1978)
🖤The Swarm (1978)
🖤Vertigo (1958)

6 countries
🖤House (1977) - Japan
🖤Häxan (1922) - Sweden/Denmark
🖤Killer's Moon (1978) - United Kingdom
🖤Raw (2016) - France/Belgium
🖤Sleepaway Camp (1983) - USA
🖤What We Do in the Shadows (2014) - New Zealand

6 decades
🖤The Witch (2015)
🖤Cirque du Freak: The Vampire’s Assistant (2009)
🖤Tales From the Hood (1995)
🖤Dead Ringers (1988)
🖤Carrie (1976)
🖤The Blob (1958)

6 films from before 1970
🖤The Birds (1963)
🖤The Blob (1958)
🖤The Crawling Eye (1958)
🖤Fiend Without a Face (1958)
🖤Häxan (1922)
🖤Vertigo (1958)

6 films from the following: Romero, Cronenberg, Clive Barker, Terence Fisher, Sergio Martino, Bill Lustig (mix-and-match, or all one)
🖤The Brood (1979)
🖤Dead Ringers (1988)
🖤Naked Lunch (1991)
🖤Scanners (1981)
🖤Videodrome (1983)
🖤Rabid (1977)

2 flying things that kill you films
🖤The Birds (1963)
🖤The Swarm (1978)

1 silent film as a tribute to A Quiet Place
🖤Häxan (1922)

1 aquatic menace film as a tribute to Meg
🖤Jaws 2 (1978)

2 women directed films
🖤Jennifer's Body (2009)
🖤Raw (2016)

1 inanimate object comes alive film
🖤Cult of Chucky (2017)

1 film with Barbara Crampton in it.
🖤We Are Still Here (2015)

And 2 Tobe Hooper Films (There must ALWAYS be a Hooper film)
🖤Invaders From Mars (1986)
🖤Poltergeist (1982)

Bonus:
🖤 Tales from the Hood (1995)
🖤 Tales from the Hood 2 (2018)
***
That's 31, so these are just to bump it to 33:
🖤The Evil Dead (1981)
🖤The Rocky Horror Picture Show (1975)