Original challenge.
ETA: Adding a few extras on my list here and there so as to give myself more OPTIONS & replace some original choices that are currently unavailable.

Criteria:

✅ 6 countries: Japan (Audition); Italy (The Beyond); Iran (Under the Shadow); France (Raw); Canada (Rabid); Ireland (Hole in the Ground)

✅ 6 decades: 1950s (Night of the Demon); 1970s (Ganja & Hess); 1980s (The Beyond); 1990s (Audition); 2010s (Under the Shadow); Vampires vs. The Bronx (2020s)

✅ 7 2nd films of franchises: Demons 2; The Conjuring 2; Friday the 13th: Part 2; Psycho 2; Damien: Omen II; Cube 2; It Lives Again

(3/4) 4 body horror films: Black Swan; Suspiria (2018); Raw; Possession; Rabid

(1/2) 2 films from this year: The Invisible Man; Relic; Vampires Vs. The Bronx

(2/3) 3 disease based films: What We Become; The Children; Scouts Guide to the Zombie Apocalypse; Rabid

✅ The highest rated horror film from the 50s that you haven't seen and can access: Night of the Demon

✅ 1 film that is set entirely inside one location: What Ever Happened to Baby Jane?

(0/1) 1 Invisible Person film: Invisible Man

✅ 1 Non Dracula Hammer Film: Paranoiac

✅ 2 films with a black director or predominantly black cast or lead: Ganja & Hess; Petey Wheatstraw

✅ 1 film with a movie theater in it: Fade to Black

✅ And 1 Tobe Hooper Films (There must ALWAYS be a Hooper film): Eaten Alive

(1/2) ***FOR THOSE THAT LIKE TO DO EXTRA WORK: WATCH The Witch Who Came From the Sea and Cube 2: Hypercube