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