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