They are on steam but don't seem to be live to the public yet.
Amnesia The Dark Descent has 17 achievements.
Alchemist
Removed the Shadow's residue in the entrance hall in Amnesia: The Dark Descent.
Altruist
Not a single victim died in Amnesia: Justine.
Benefactor
Rescued Agrippa in Amnesia: The Dark Descent.
Descendant
Taken a rough ride on an elevator in Amnesia: The Dark Descent.
Egotist
Not a single victim survived in Amnesia: Justine.
Escape Artist
Escaped the creature in the water in Amnesia: The Dark Descent.
Illuminatus
Picked up every tinderbox in Amnesia: The Dark Descent.
Insanity
Achieved all other achievements.
Master Archivist
Read all notes in all games.
NOPE
Left when things were getting interesting in Amnesia: The Dark Descent.
Pipeworker
Lowered the water level in the cistern to reveal a new way out in Amnesia: The Dark Descent.
Quitter
Failed to escape the cells and was consumed by the Shadow in Amnesia: The Dark Descent.
Restorer
Collected the pieces of the orb and rebuilt it in Amnesia: The Dark Descent.
Sacrifice
Allowed Alexander to escape in Amnesia: The Dark Descent.
Still Alive
Became aware of the merits of A.S. Inc.'s Span-space Device in Amnesia: Justine.
Survivor
Killed Alexander and escaped the castle in Amnesia: The Dark Descent.
Vacillator
Some victims died, some lived in Amnesia: Justine.
https://completionist.me/steam/game/57300