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