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
Banish 8 Keepers
Defeat 'Susuk Lady' with 10 'Susuk Needles' or less
Banish 4 Keepers
Play KOTD for 2 hours
Banish 1st Keeper
Defeat 'Ceramic Woman' without damaging her decoys
View All Linda's Past Projections in Limbo