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