Rules from the official Hooptober 11 list:

There must be 31 horror films
6 countries
8 decades
ALL of the films from a horror franchise with at least 4 entries (if there is a hard reboot, you can choose whichever has 4+ that you prefer)
1 film by Wes Craven
1 film caused by/worsened by weather
1 film starring a Black woman
1 Donald Sutherland film
3 films from New World Pictures.
2 Indian films.
4 Italian films
2 Horror comedies
2 films made primarily or entirely in Texas
1 film that exists in at least 2 available cuts (you just have to watch one. Bonus if you watch them all.)
1 Robert Wiene film
1 Michele Soavi film
1 film from 2011
1 film from 1984

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