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