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