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