Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Bookworm	Find all diary pages.
Born killer	Let John merge with the piano.
Collector	Find all objects.
Ghost Encounters	Call for a ghost brother 10 times.
Haunted	Find all persons.
Laudanum Collector	Collect 50 laudanum
Open your third eye	Stay in the vision for 60 seconds.
Pills Collector	Collect 25 pills
Remember Remember	Find all memories.
Reunited	...
There must always be a player at the piano.	Finish the game.
True Detective	Find all clues.