I will succeed this time!

6 sequels (mix-and-match. 6 total)
Halloween 3
Exorcist 2
Ringu 2
Nightmare on Elm Street 2
Dracula's Daughter
VHS 2

6 countries
Kwaidan (Japan),
Hipersomnia (Argentina)
México Bárbaro (México),
Viy (Rusia)
White (Corea)
Verónica (Spain)

6 decades
(1982) (1978) (1935) (1999)(2004) (2013)

6 before 1970
Carnival of Souls
Dracula
London after Midnight
Black sunday
Night of the Eagle

6 Carpenter, Raimi, Whale, Browning, Holland
Bride of Frankenstein
Evil Dead 2
Dracula
The Fog
London after Midnight
Old dark house

3 people eating people
Green Inferno
We are what we are
Offspring

1 hammer
The curse of the werewolf

1 romero dead
Dawn of the dead

1 terrible oversight
Alien

2 Tobe Hooper
Texas Chainsaw
Texas Chainsaw 2

It and the remake