Breaking my self-imposed sequel/remake rule for this year, but these are still going to be first watch only. List is subject to change. There will be more than 31 towards the end.

Reviews linked here:
Don't Look Now
Faust: Love of the Damned
The Old Dark House
Cathy's Curse
Q: The Winged Serpent
Tigers Are Not Afraid
The Funhouse
Dracula's Daughter
The Psychotronic Man
Beyond The Darkness
Candyman

6 countries (Japanese, Korean, Belgian, Mexican, Indonesian, Russian)
6 decades (20s, 30s, 50's, 60's, 80's, 90's)
6 films from before 1966 (Freaks, The Old Dark House,The Phantom of the Opera, The Phantom Carriage, Robot Monster, Dracula's Daughter)
6 films whose year ends in '6' (Spookies, Thinner, The Wailing, TerrorVision, Stay Alive, Friday the 13th pt 6: Jason Lives)
6 films featuring work from the following: John Carl Buechler,
Jack Pierce, Rob Bottin, Screaming Mad George, Lon Chaney
and Carlo Rambaldi (Faust: Love of the Damned, Bride of Reanimator, Tammy and the T-Rex, TerrorVision, Bay of Blood, The Phantom of the Opera)
The 6th film of a franchise (Friday the 13th VI: Jason Lives)
1 Reptile Rampage film as tribute to Crawl (Q: The Winged Serpent)
2 women directed films (Prime Evil,Tigers Are Not Afraid)
The lowest rated film from the 80s that you can access.(Hobgoblins)
1 film where the men and women of the church are having a bad day. (Viy)
1 Larry Cohen or Dick Miller film (Q: The Winged Serpent)
1 Classic Universal (Dracula's Daughter)
1 film with Dee Wallace in it. (The Hills Have Eyes)
1 film with a black director or predominantly black cast. (Tales From The Hood)
1 film from a Mexican director to honor 2 great films from Gigi Saul Guerrero & Issa López. (Tigers Are Not Afraid)
1 Tobe Hooper Film (The Funhouse)