The power of Hooptober compels you.

Hooptober Film list:

6 Countries
Dagon (Spain, 2001)
Train to Busan (Korea, 2016)
Relic (Australia, 2020)
The Cabinet of Dr. Caligari (Germany, 1920)
The Eye (Hong Kong/Singapore, 2002)
Frostbitten (Sweden, 2006)
Noroi: The Curse (Japan, 2005)
Them (Ils) (France/Romania, 2006)
A Bay of Blood (Italy, 1971)
Impetigore (Indonesia, 2019)

6 Decades
The Cabinet of Dr. Caligari (1920)
The Invisible Man (1933)
The Thing from Another World (1951)
Carnival of Souls (1962)
Alice Sweet Alice (1976)
Poltergeist II: The Other Side (1986)
Lord of Illusions (1995)
Mulberry Street (2006)
Impetigore (2019)
Hallowed Be Thy Name (2020)

7 2nd Films of Franchises
Howling II: Stirba - Werewolf Bitch (1985)
Poltergeist II: The Other Side (1986)
Dawn of the Dead (1978)
Stepfather II (1989)
The Texas Chainsaw Massacre 2 (1986)
Bride of Re-Animator (1990)
Happy Death Day 2 U (2019)

4 Body Horror Films
Dead Ringers (1988)
Videodrome (1983)
Bride of Re-Animator (1990)
The Stuff (1985)

2 Films from this Year
Hallowed Be Thy Name (2020)
Relic (2020)

3 Disease-based Films
The Crazies (1973)
Mulberry Street (2006)
Bug (2006)

The Highest Rated Horror Film from the 50s that You Haven't Seen and Can Access
The Thing from Another World (89% RT, 7.67/10, 1951)

1 Film that is Set Entirely Inside One Location
Bug (2006)

1 Invisible Person Film
The Invisible Man (1933)

1 Non-Dracula Hammer Film
The Devil Rides Out (1968)

1 Film with a Movie Theater in it
The Thing from Another World (1953)

1 Tobe Hooper Film
The Texas Chainsaw Massacre 2 (1986)

These films are all new watches to me. However the idea of watching 31 new movies every year in October doesn't seem very sustainable, especially when trying to meet some criteria like "7 2nd films of franchises".