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