Here is the full list of all 10 DreadOut: Keepers of The Dark achievements.
Finish the lost chapter
Open the Hidden Big Door
Banish all Keepers
Defeat 'Ceramic Woman' without damaging her decoys
Defeat 'Susuk Lady' with 10 'Susuk Needles' or less
Banish 8 Keepers
View All Linda's Past Projections in Limbo
Banish 4 Keepers
Banish 1st Keeper
Play KOTD for 2 hours