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