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