Here is the full list of all 34 9 Years of Shadows achievements.
Acquire all of the progression abilities.
Break the curse.
Allow Hibino to complete his mission.
Defeated the Logon Duck in the Upper Quarters.
Upgrade your Vitality to the maximum.
Rescue all of the musicians.
Defeat Draythus in The Orphanage.
Defeat Miria.
Complete the bestiary.
Find all eight cartographer's journals.
Upgrade your Light Bar to the maximum.
Defeat Maelzel.
Defeat Link.
Defeat Limo and Nissi.
Save Talos' Heart in Talos Core.
Defeat the Horned God.
Defeat Locrian Sentinel in Talos Core.
Defeat the Reaper.
Defeat the Gear of Erebus.
Defeat Frinise.
Defeat the Shadow of Demise.
Defeat Hekate's Illusion in the Capra Cauldrons.
Defeat Issa Kabeer.
Defeat the Shadow of Despair.
Find ten secret rooms.
Defeat Leno.
Defeat the Mask of Andros in the Eucalyptus Garden.
Defeat Ulf.
Successfully perform four quick heals with Radical Acceptance in a row.
Defeat the Shadow of Hope.
Defeat the Tantalus Roach in the Forgotten Pond.
Defeat the Dwarven Guard.
Perform a Lullaby for the first time.
Kill the same common enemy ten times.