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