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