Full list of all 51 The Legend of Heroes: Trails of Cold Steel achievements. It takes around 80-100 hours to unlock all of the achievements on Windows.
Forged a strong bond with Machias.
Forged a strong bond with Gaius.
Forged a strong bond with Elliot.
Forged a strong bond with Millium.
Forged a strong bond with Towa.
Completed the final chapter.
Forged a strong bond with Fie.
Achieved student rank A0.
Won 1000 battles.
Completed all quests, both extra-curricular and during field studies.
Completed Chapter 6.
Defeated 8 enemies at once.
Initiated 300 advantage encounters (including double and triple advantage).
Used 100 S-Breaks in battle.
Completed Chapter 5.
Raised any two characters to Link Level 5.
Raised a master quartz to level 5.
Used Rush in battle 100 times.
Completed Chapter 4.
Won 500 battles.
Completed Chapter 3.
Used over 500 follow-up attacks in battle.
Completed Chapter 2.
Acquired over a million mira.
Won 100 battles.
Completed Chapter 1.
Earned an S-Rank on any chapter.
Won a battle with a tactical bonus of x2.0 or greater.
Completed the prologue.
Arrived in Trista for the first day of school.
Mastered Trails of Cold Steel and earned every trophy.
Received the Lionheart Medal of Heroism from Principal Vandyck.
Completely filled the monster guide.
Obtained all recipes.
Caught all varieties of fish.
Completed all of the character profiles in the notebook.
Completely filled the book section of the notebook.
Opened every treasure chest in a single playthrough.
Gathered all 28 varieties of master quartz.
Completed the game on nightmare difficulty.
Completed the game on hard or nightmare difficulty.
Played for over 100 hours.
Acquired the strongest weapon for any character.
Canceled enemy arts and crafts 100 times.
Used Burst in battle 50 times.
Forged a strong bond with Alisa.
Forged a strong bond with Laura.
Forged a strong bond with Emma.
Forged a strong bond with Jusis.
Forged a strong bond with Crow.
Forged a strong bond with Sara.