Here is the full list of all 53 The Last Faith achievements.
Reach the true ending.
Unlocked all achievements for The Last Faith.
Defeat Medeya.
Acquire both of Esk’s eyes.
Defeat the Harbinger of Nightmare.
Be consumed by the Cosmic Voice.
Defeat Caterina and Annabella.
Accept the Throne.
Acquire every Sepolcro.
Defeat Lord Laddak.
Finish Lady Annika’s quest.
Find all notes.
Defeat Nyxaroth the Eldritch Wight.
Deliver all the Unborn of the Midnight Aristocracy to the Woman in Ink.
Finish Madelyne and Theodora's quest.
Acquire all spells.
Acquire all primary weapons.
Deliver all the dried livers to Lady Dorothea.
Upgrade any primary weapon to its maximum level.
Defeat the Old Wymond.
Upgrade any secondary weapon to its maximum level.
Deliver all of the blueprints to Mariano.
Defeat the Starlight Beast of Illygarth.
Acquire all Federal Era Belts.
Acquire all firearms.
Acquire all Healing Holsters.
Defeat Leena.
Defeat the Cold One Beast.
Use the Stigma of Transcendence.
Defeat the Burnt Apostate.
Parry 50 incoming attacks.
Finish Aldrich's quest.
Raise any stat to level 50.
Acquire the Celestial Larva.
Defeat Manfredd the Accursed.
Defeat Lisa.
Defeat the second Starborn Nighthunter.
Perform 30 execution moves.
Acquire the Propulsion Boots.
Defeat Yegor and Leena.
Finish Helenya’s quest.
Defeat the first Starborn Nighthunter.
Finish Lucyl’s quest.
Defeat the Voracious Terror.
Spend over 50,000 Nycrux.
Acquire the Nighthunter’s Grappling Claw.
Defeat Edwyn the Shadowscourge Horror.
Acquire the Technological Lens.
Acquire the Gravitational Ring.
Defeat Dr. R. Hermann.
Defeat the Winged Pale Laments.
Kill 100 enemies.
Defeat the Giant Patron.