Twofold

1. 
   By a Thread

   Finish the prologue
   —
2. 
   Work in Progress

   Finish Caprice Act 1
   —
3. 
   Watercolors

   Finish Caprice Act 2
   —
4. 
   Two-Point Perspective

   Finish Caprice Act 3
   —
5. 
   Something Borrowed, Something BlueSecret

   Steam withholds the description of a secret achievement.
   —
6. 
   Pen to Paper

   Finish Millie Act 1
   —
7. 
   Out of Character

   Finish Millie Act 2
   —
8. 
   Memories Made

   Finish Millie Act 3
   —
9. 
   Something Old, Something NewSecret

   Steam withholds the description of a secret achievement.
   —
10. 
    Overprepared

    Experience all optional choices in the prologue
    —
11. 
    JOIN THE ART CLUB!

    Join the art club, for better or worse
    —
12. 
    How Bad Could It Be?

    Join the writing club, or what little is left of it
    —
13. 
    Let Her Know We Love Her

    Make Allison a promise (Befriend Allison)
    —
14. 
    A Lot to Live Up to

    Find a true friend in Darren (Befriend Darren)
    —
15. 
    Her Answer

    Get the truth from Eileen (Befriend Eileen)
    —
16. 
    Could've Gone Worse

    Listen to what Heather has to say (Befriend? Heather)
    —
17. 
    Best Intentions

    Help ease the guilt weighing Tanya down (Befriend Tanya)
    —
18. 
    All In

    Help Wallace find his place in the club (Befriend Wallace)
    —
19. 
    Drawn Together

    Browse the Guest Art gallery after unlocking it
    —
20. 
    Circle Back Around

    Complete both key paths in Twofold
    —
21. 
    It'll Take a While...Secret

    Steam withholds the description of a secret achievement.
    —
22. 
    ... But They'll Be OkaySecret

    Steam withholds the description of a secret achievement.
    —
23. 
    Cars Is Bugs

    Check in on Junebug
    —
24. 
    Next Time For Sure

    She has a name, you know
    —
25. 
    Traced Footsteps

    Obtained all other achievements. Thank you for following their stories.
    —

Names, descriptions and icons are the game’s own, as Steam publishes them.