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.
Cleared Chapter 6 - Lacrimosa of the Distant Sea.
Performed 100 Flash Guards.
Passed the final trial, and learned the true history of the Kingdom of Eternia.
Owned 888 of a single item.
Completed all raids.
Completed all hunts.
Achieved 100% Material Entries Logged.
Completed every Castaway Village quest.
Fully enhanced all weapons.
Achieved 100% Village Fortifications Built.
Achieved a Reputation of 200 or more.
Achieved 100% Meal Entries Logged.
Defeated Mephorash at the Silent Tower.
Achieved 100% Location Points Found.
Brought all survivors to Castaway Village.
Performed 100 EXTRA Skills.
Rescued every spirit in Eternia.
Cleared Chapter 5 - Maiden of the Great Tree.
Defeated the Oceanus once and for all.
Traveled a total distance of 300 krimelye.
Performed a Skill Finish 1000 times.
Cleared Baja Tower.
Performed 100 Flash Moves.
Defeated 100 Primordials.
Cleared Chapter 4 - The Lost World.
Performed 1000 Breaks.
Cleared Chapter 3 - Surpassing Gendarme.
Thoroughly explored while playing as Adol.
Defeated 2000 beasts.
Cleared Chapter 2 - The Castaway Banquet.
Achieved an S Rank in any raid.
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.
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.
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.
Cleared all Eternia Quests.
Defeated Melaiduma at the Former Sanctuary Crypt.
Witnessed the true ending on Nightmare difficulty or higher.