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