Here is the full list of all 37 Lost Alone Ultimate achievements.
Welcome or welcome back to Lost Alone.
You delivered the pizza to Laura.
You chased away Laura's shadow.
You organized all of Danny's books.
You fixed the Demon's eyes.
You fixed all the telescopes.
You set up all the chess pieces correctly.
You organized all the VHS tapes.
You fixed all the portraits.
You organized all the vinyl records.
You discovered the truth about Hanna.
You discovered the truth about George.
You played the piano correctly.
You removed the needles from the teddy bear correctly.
You defeated Mom's cancer.
You organized all the X-rays.
You used the vending machine.
You gave Laura her medicine.
You organized all the billiard balls.
You organized all the metal plates.
You reassembled Alberto's corpse.
You fixed all the demon paintings.
You solved the puzzle of the Slaughterhouse.
You got rid of the fly.
You solved the puzzle of the Murdrum room.
You discovered the truth about George's childhood.
You organized all the excipients.
You organized all the fish.
You reassembled the mannequin.
You placed all the gems in the chalice.
You organized all the ingredients.
You started the jukebox.
You organized all of Grandma's plants.
You cooked the broth correctly.
You prepared Grandma's medicine correctly.
You finished Lost Alone Ultimate.
You watched the post-credits scene.