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