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