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