Full Gameplay Walkthrough...

Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Breaking	Complete Chapter 6.
Duckling steps	Complete the tutorial of Swan Song.
Growing Apart	Complete Chapter 5.
How To Grieve	Complete Chapter 4.
Puzzle Master	Find all secret levels in Swan Song.
Regret	Complete Chapter 9.
Sinking Feeling	Complete Chapter 1.
Smiling Through Tears	Complete Chapter 2.
The Inevitable	Complete Chapter 3.
Time & Distance	Complete Chapter 8.
What happens now?	Find all five of Tristan's maker marks.
Workshop	Complete Chapter 7.