6 sequels (mix-and-match. 6 total)
6 countries
6 decades
6 films from before 1970
6 films from the following: Carpenter, Raimi, Whale, Browning, Craven, Tom Holland (mix-and-match, or all one)
3 people eating people (non-zombie)
1 Hammer Film
1 Romero Dead film
1 terrible oversight (use the following link, filter out the films you've seen and picked the highest rated film from the list that you can get ahold of) letterboxd.com/films/genre/horror/by/rating/size/small/

And 2 Tobe Hooper Films (There must ALWAYS be a Hooper film)