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