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