Here is the full list of all 18 Faye: A Tale of Shadow achievements.
Watched the credits all of the way through!
Completed all of the chapters in the game.
Become friends with Kaine.
Become friends with Arthur.
Become friends with Momo.
Become friends with Emily.
Become friends with Harmony.
Become friends with Aurora.
Become friends with Sylvia.
Become friends with Shine.
View the glossary.
Complete the game with all of the optional battles won.
Complete the game without doing any optional battles.
Reach level 100.
Complete the game without using the assist options.