I cheated a little and started a week early in September, because I thought I wouldn't otherwise finish them all, but the only movie I watched before the official opening was The Conjuring.
If the movie has "Hooptober: x/31" in the notes, that means I've watched it for this go-round. Otherwise, it's a potential entry.
Here are the rules from Cinemonster’s master list:
QUICK EASY RULES:6 sequels (mix-and-match. 6 total)
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…