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