Full Walkthrough Guide...

Complete the indicated task to unlock the achievement.

Achievement	How to unlock
A Letter Unsent	Deliver Imahen's letter to Opus.
A New Beginning	Receive Cardamine's Letter.
A Perfect Journey	Finish the game with a 100% Collection Rate.
A Wish Unfulfilled	Defeat the Mintmaster.
A Wish	Craft Enhanced Wristband.
All in Ashes	Save Solateria from the plague.
Baran's Champion	Defeat the Zephiron Fighter.
Battle-Hardened Sparring	Spar with Chasa.
Beyond the Long River	Defeat Charon.
Bloomed in Death	Defeat Gaia.
Brave Warrior	Be there for Cor's final moments.
Burning Heat	Obtain all Inflares.
Chasa's Right-Hand Man	Defeat the Pyron Commander.
Deeply Resonate	Find all secrets of Solateria.
Faith	Defeat Fidiel.
Full Donation Box	Donate a lot of OHN to the Library.
Guardian of the Library	Rescue your friends from the library.
Guardians	Defeat the Four Guardians.
Haechi's Gratitude	Ride Haechi across the Windshade Spire.
Liberation	Defeat every boss and mini-boss.
Memory Intact	Collect every memory to the highest level.
Old Warrior's Dream	Defeat the Gatekeeper.
Reclaimed Power	Obtain every Core Stone.
Relic	Obtain the Relics of the five Litt races.
Resonance	Resonate with Verita.
Rest	Defeat Imahen.
Return to the Water	Defeat Soowoo.
Salvation	Defeat Primordial Flame.
Separation	Find the trace of Myoso's mother with her.
Shattered	Defeat the Gatekeeper of Terradin.
Song of Flower and Grass	Defeat Moomoo.
Souvenir Collector	Collect every Commemorative Marker.
Spirit Flame	Obtain the Spirit Flames of the Five Warriors.
Strength Reforged	Obtain every part.
Swordsmanship Above Skill	Defeat the Infected Mucora Technician.
The Festival's End	Defeat Moldin.
The Gleaming Blade's Edge	Defeat the Ophilin Swordsman.
The Glowing Map	Reveal all regions of Solateria.
The Gourmet's Log	Try every dish.
The King's Eternal Herald	Defeat Despaired Chasa.
The Last Journey	Check the traces left by Muha.
The Last Keeper	Defeat Seed Keeper.
The Return of the King	Clear the game in Legendary Flame mode from start to end.
The Special Altar	Restore the Center of the Ashen Library Altar.
The Ultimate Secret Society	Collect every Plague Sprout.
Treasure Trove	Find the hidden treasure trove.
Truth Lies Far and High	Defeat Verita.
Unfinished Love	Defeat Baran.
Verita's Blessing	Unlock every Heat Core.
Warrior's Path	Obtain a wristband.