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