Here is the full list of all 25 Bendy and the Ink Machine achievements worth 1,000 gamerscore.
Survive being chased by Bendy.
Solve the music puzzle.
Discover the Monster.
Collect all the ritual items.
Play the pipe organ 5 times.
Get all the Bendys on stage.
Choose the way of Bendy.
Choose the way of Alice.
Unleash the Tommy Gun.
Play with 25 Bendy dolls.
Listen to Henry's audio log.
Defeat Bertrum.
Found Boris.
Take a photo at the photo cutout.
Complete Chapter 4 with the plunger.
Get a perfect score on the Bull's Eye Bonanaza.
Find out where you belong.
Find a new way through.
Discover what's living below.
Take a longer walk.
Bathe in violence.
Listen to all audio logs in the game.
Complete the Main Story.
Collect all of the bacon soup in the game.
Find all of the hidden radios in the game.