Here is the full list of all 53 The Legend of Heroes: Trails into Reverie achievements.
Cleared Prologue - Operation: Liberate Crossbell.
Began the operation to liberate Crossbell.
Obtained all achievements.
Accomplished all Master Missions and received compensation. (Excludes Coda Content)
Reached Liberation Rank S.
Cleared the game on Nightmare difficulty.
Had all daydreams. (Excludes Coda Content/DLC Episodes)
Completely filled the battle section of the notebook. (Excludes Coda Content)
Opened all treasure boxes. (Excludes Reverie Corridor Daydreams)
Completely filled the character section of the notebook. (Excludes Coda Content)
Completely filled the recipe section of the notebook. (Excludes Coda Content)
Completely filled the fishing section of the notebook. (All 26 Species of Fish + Rod Lv. Max)
Completely filled the books section of the notebook. (Excludes Marksman of the Moonless Morn)
Won against all opponents in Pom! Pom! Party!
Won against all opponents in Vantage Masters. (Excludes Gold Sealing Stone and VM Dojo Characters)
Collected 55 types of master quartz.
Collected 6 types of Lost Arts quartz.
Earned 2,000,000+ mira.
Forged 3 types of weapons with Black Zemurian Ore.
Raised any master quartz to level 15.
Achieved 100 victories in battle.
Achieved 500 victories in battle.
Achieved 1500 victories in battle.
Initiated 300 advantageous encounters. (Includes Double and Triple Advantage)
Performed 100 S-Crafts.
Won a battle with a tactical bonus of x3.0 or greater.
Defeated 8 enemies at once.
Induced 800 break states.
Raised any two characters to Link Level 7.
Performed 500 assists.
Performed 100 Rushes.
Performed 50 Bursts.
Enacted 100 Brave Orders.
Enacted 100 United Front Attacks.
Cast 100 United Front Arts.
Performed 50 United Front Heals.
Used arts that target an enemy's weak point 100 times.
Conquered 9 Trial Doors.
Enjoyed all activities in the Beachside Vac-Cay Daydream.
Cleared Lloyd's Route: Act I - Signing Ceremony.
Cleared Rean's Route: Act I - As the Snow Thaws.
Cleared ???'s Route: Act I - Evening of Encounters.
Cleared Lloyd's Route: Act II - Lost Heroes.
Cleared Rean/C's Route: Act II - Vermillion Muck and Mire/Slinking in the Shadows.
Cleared Lloyd's Route: Act III - Illusions Shattered.
Cleared Rean's Route: Act III - Cruel Blue Skies.
Cleared C's Route: Act III - Light in the Dark.
Cleared Lloyd's Route: Act IV - Will, Tempered by Dusk.
Cleared Rean's Route: Act IV - Zeroth Hour.
Cleared C's Route: Act IV - Elysium.
Cleared Finale - Hope in Reverie.
Went into the final battle equipped with evidence needed to discern the truth.
Bore witness to a certain conversation.