Here is the full list of all 54 Ys VIII: Lacrimosa of DANA VIII-Lacrimosa of DANA- achievements.
Achieved Lv. MAX with every skill.
Thoroughly explored while playing as Sahad.
Thoroughly explored while playing as Hummel.
Thoroughly explored while playing as Ricotta.
Achieved 100% Items Collected.
Defeated Melaiduma at the Former Sanctuary Crypt.
Owned 888 of a single item.
Achieved 100% Village Fortifications Built.
Achieved 100% People Entries Logged.
Achieved 100% Approval Earned.
Achieved 100% Beast Entries Logged.
Achieved 100% Treasures Found.
Defeated Mephorash at the Silent Tower.
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.
Completed the map of the Isle of Seiren.
Passed the final trial, and learned the true history of the Kingdom of Eternia.
Cleared all Eternia Quests.
Completed all hunts.
Completed every Castaway Village quest.
Achieved 100% Fish Entries Logged.
Completed all raids.
Thoroughly explored while playing as Laxia.
Achieved 100% Material Entries Logged.
Fully enhanced all weapons.
Achieved 100% Meal Entries Logged.
Achieved a Reputation of 200 or more.
Brought all survivors to Castaway Village.
Achieved 100% Location Points Found.
Rescued every spirit in Eternia.
Defeated 100 Primordials.
Cleared Chapter 5 - Maiden of the Great Tree.
Performed 100 EXTRA Skills.
Defeated the Oceanus once and for all.
Thoroughly explored while playing as Dana.
Performed a Skill Finish 1000 times.
Cleared Baja Tower.
Traveled a total distance of 300 krimelye.
Performed 1000 Breaks.
Cleared Chapter 4 - The Lost World.
Performed 100 Flash Guards.
Thoroughly explored while playing as Adol.
Cleared Chapter 3 - Surpassing Gendarme.
Defeated 2000 beasts.
Performed 100 Flash Moves.
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.