Here is the full list of all 18 Fading Hearts achievements.
Be at the right time and place to avoid catastrophe
Meet a tragic end to your life
Find the heart of the forest
Escape a calamity with only your life
See a hidden side of Rina's personality
Confront yourself
Discover the truth behind the "The Player's" emails
Learn about Alex's past
Cause a major glitch in an ending
Rewarded for being in a Log Cabin
Save a fellow IT worker from having a meltdown
Meet the mysterious Magical Girl Mystica
Convince Claire to break up with her boyfriend
Uncover the truth behind the shadows
Engage the source of the shadows in a final showdown
Expose Mystica's identity
Keep Sophia company
Cause a bank to fail