Here is the full list of all 54 Ys VIII: Lacrimosa of DANA VIII-Lacrimosa of DANA- achievements.
Cleared Epilogue - End of the Blue Waves, and viewed the true ending.
Performed 100 EXTRA Skills.
Cleared Chapter 6 - Lacrimosa of the Distant Sea.
Passed the final trial, and learned the true history of the Kingdom of Eternia.
Cleared all Eternia Quests.
Completed the map of the Isle of Seiren.
Achieved 100% Treasures Found.
Defeated Mephorash at the Silent Tower.
Achieved 100% Village Fortifications Built.
Achieved 100% Material Entries Logged.
Achieved a Reputation of 200 or more.
Brought all survivors to Castaway Village.
Achieved 100% Location Points Found.
Achieved 100% Meal Entries Logged.
Rescued every spirit in Eternia.
Defeated 100 Primordials.
Cleared Chapter 5 - Maiden of the Great Tree.
Owned 888 of a single item.
Defeated the Oceanus once and for all.
Performed a Skill Finish 1000 times.
Performed 100 Flash Moves.
Traveled a total distance of 300 krimelye.
Cleared Baja Tower.
Cleared Chapter 4 - The Lost World.
Cleared Chapter 3 - Surpassing Gendarme.
Performed 1000 Breaks.
Defeated 2000 beasts.
Cleared Chapter 2 - The Castaway Banquet.
Achieved an S Rank in any raid.
Thoroughly explored while playing as Adol.
Enhanced a weapon to Lv. MAX.
Made it through the Eroded Valley.
Made it through the Towering Coral Forest.
Cleared Chapter 1 - The Isle of Seiren.
Cleared Prologue - Night on the Gaete Sea.
Began a new adventure.
Achieved 100% Items Collected.
Achieved 100% People Entries Logged.
Achieved 100% Fish Entries Logged.
Achieved 100% Beast Entries Logged.
Completed every Castaway Village quest.
Achieved 100% Approval Earned.
Fully enhanced all weapons.
Performed 100 Flash Guards.
Completed all raids.
Completed all hunts.
Achieved Lv. MAX with every skill.
Thoroughly explored while playing as Laxia.
Thoroughly explored while playing as Sahad.
Thoroughly explored while playing as Hummel.
Thoroughly explored while playing as Ricotta.
Thoroughly explored while playing as Dana.
Defeated Melaiduma at the Former Sanctuary Crypt.
Witnessed the true ending on Nightmare difficulty or higher.