Full list of all 51 The Legend of Heroes: Trails of Cold Steel II achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Won 600 battles.
Used Rush in battle 100 times.
Used 100 S-Breaks in battle.
Completed the Intermission.
Used over 500 follow-up attacks in battle.
Completed Act 1.
Earned an S rank during part of any chapter.
Used Burst in battle 50 times.
Initiated 300 advantage encounters (including double and triple advantage).
Won a battle with a tactical bonus of x3.0 or greater.
Won 100 battles.
Completed the Prologue.
Woke up in the Eisengard Range.
Mastered Trails of Cold Steel II and earned every achievement.
Achieved student rank A0.
Received the Grand Cordon of the Order of the Phoenix Wings from Emperor Eugent III.
Completed all 39 quests.
Completely filled the monster guide (excluding EX sections).
Obtained all 22 recipes.
Caught all 24 varieties of fish.
Completed all of the character profiles in the notebook.
Completely filled the book section of the notebook (excluding books only available in NG+).
Opened every chest between the Prologue and the Finale.
Gathered all 31 varieties of master quartz.
Completed the game on nightmare difficulty.
Completed the game on hard or nightmare difficulty.
Acquired over a million mira.
Raised a master quartz to level 5.
Acquired the strongest weapon for any character.
Canceled enemy arts and crafts 100 times.
Defeated 8 enemies at once.
Raised any two characters to Link Level 7.
Used Overdrive in battle 100 times.
Slayed Isra-Zamiel in Glacia Shrine.
Read the decoded Black Records and had an encounter you'll never forget.
Spent the evening before the final battle with Alisa.
Spent the evening before the final battle with Elliot.
Spent the evening before the final battle with Laura.
Spent the evening before the final battle with Machias.
Spent the evening before the final battle with Emma.
Spent the evening before the final battle with Jusis.
Spent the evening before the final battle with Fie.
Spent the evening before the final battle with Gaius.
Spent the evening before the final battle with Millium.
Spent the evening before the final battle with Sara.
Spent the evening before the final battle with Towa.
Spent the evening before the final battle with Alfin.
Completed Act 2.
Completed the Finale.
Completed the Divertissement.
Completed the Epilogue.