Here is the full list of all 34 Fragments Of A Mind achievements.
Completed the prologue
Completed the first chapter
Completed the second chapter
Completed the third chapter
Completed the fourth chapter
Completed the fifth chapter
Completed the sixth chapter
Completed the seventh chapter
Completed the eighth chapter
Completed the ninth chapter
Completed the epilogue
Checked the campsite (Prologue)
Lighted all four torches in the maze without dying (Bridge)
Completed the red path first (Marsh)
Defeated the forest spirit without using any skills (Forest)
Eaten all three pieces of food in less than a minute (Farm)
Didn't turn off electricity in the second part of downtown (City)
Found the secret room near the nine rooms puzzle (Cellars)
Only used the cannon on the right side during a big fight (Fortress)
Did not use Truesight when fighting the Witch for the first time (Graveyard)
Found all orbs of power (Mirror)
Read the journal (Epilogue)
Collected all memory fragments in any chapter
Collected a perk point in any chapter
Completed a main chapter in time limit on easy difficulty
Completed a main chapter in time limit on normal difficulty
Completed a main chapter in time limit on hard difficulty
Completed a main chapter without dying on easy difficulty
Completed a main chapter without dying on normal difficulty
Completed a main chapter without dying on hard difficulty
Completed all main chapters in time limit on any difficulty
Completed all main chapters without dying on any difficulty
Completed the game on any difficulty
Found all memory fragments in all main chapters