Here is the full list of all 49 The Legend of Heroes: Trails from Zero achievements.
Completed the Finale, 'Crossbell's Longest Day.'
Achieved 1000 victories in battle.
Forged a strong bond with Elie.
Completed Chapter 4, 'Creeping Wisdom.'
Defeated over 2000 enemies.
Defeated 8 enemies at once.
Defeated Vizou for the extermination request.
Defeated Org Virage for the extermination request.
Defeated Dark Legend for the extermination request.
Completed Chapter 3, 'Crossbell Anniversary Festival.'
Attended the Schwarze Auction with Elie.
Attended the Schwarze Auction with Tio.
Attended the Schwarze Auction with Randy.
Achieved 500 victories in battle.
Completed Chapter 2, 'Golden Sun, Silver Moon.'
Completed a chapter without fleeing from battle.
Completed Chapter 1, 'Afternoon of the Wolves.'
Achieved 100 pre-emptive attacks.
Achieved 100 victories in battle.
Completed the Prologue, 'Special Support Section.'
Recovered from critical condition in battle.
Received the Detective Notebook.
Mastered Trails from Zero and earned every achievement.
Became a 1st Class Detective.
Collected all information in the Combat Notebook.
Completed all quests.
Obtained all recipes.
Collected all quartz.
Collected all Back Alley Doctor Glenn and Crossbell Times.
Collected all decorations and Enigma covers.
Opened every treasure chest.
Caught all fish.
Created all supreme dishes.
Created all peculiar dishes.
Had one million mira or more.
Played for over 100 hours.
Created the strongest weapon.
Raised any one character to level 50.
Used 100 S-Breaks.
Canceled 100 enemy arts or crafts.
Won a battle with a tactical bonus of ×3.00 or more.
Won 3 chained battles.
Completed a chapter without suffering K.O. in battle.
Completed the game with all party less than or equal to level 40.
Completed the game on hard difficulty or higher.
Completed the game on nightmare difficulty.
Defeated Regna Veriel.
Forged a strong bond with Tio.
Forged a strong bond with Randy.