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