Here is the full list of all 26 The Kids We Were achievements.
Finish chapter 11.
Collected 80 catalog entries.
Finish chapter 10.
Finish chapter 9.
Collected 70 catalog entries.
Finish chapter 8.
Collected 60 catalog entries.
Collected 50 catalog entries.
Finish chapter 7.
Finish chapter 6.
Collected 40 catalog entries.
Finish chapter 5.
Collected 30 catalog entries.
Finish chapter 4.
Collected 20 catalog entries.
Collected 10 catalog entries.
Finish chapter 3.
Finish chapter 2.
Finish chapter 1.
Finish chapter 12.
Finish chapter 13.
Finish chapter 14.
Finish chapter 15.
Finish the main story.
Finish the bonus episode.
Completed your catalog.