Here is the full list of all 29 The Story Goes On achievements.
Unlock Sprout
Unlock Foster
Unlock Gambit
Hack and slash 1000 enemies!
Find 75% of items!
I've accepted my savior
Obtain the Spooky Page
Find 50% of items!
Obtain the Desert Page
$ Dolla Dolla Bill $
Obtain the Snow Page
have you ever wen't fest?
Don't kill the Witch Boss when she turns into a snake
Obtain the Forest Page
Find 25% of items!
Start a run!
Unlock your first boss room!
Obtain a sword upgrade in a hidden cave
The controls aren't that hard...
...even though you've died 20 times...
Barely make it...
I'll tell YOU when I've had enough!
Whip 10 ghosts as Foster
Beat an entire floor as Gambit using only his special ability
Cleared either the Dark Forest or the Void without taking damage
Spin the wildcard 40 times
Obtain the Dark Forest Page
Obtain the Final Page
Find all items!