Here is the full list of all 53 The Legend of Heroes: Trails of Cold Steel IV achievements.
Mastered Trails of Cold Steel IV and earned every achievement.
Completely filled the cards section in the notebook.
Gathered all 31 varieties of master quartz.
Won 700 battles.
Opened every treasure chest.
Completely filled the battle section in the notebook. (Besides the Extra category)
Completely filled the character section in the notebook.
Initiated 300 advantage encounters. (Including double and triple advantage)
Acquired over a million mira.
Completed all quests.
Achieved a Unity Grade of Unbreakable.
Won against all opponents in Pom! Pom! Party!
Completely filled the recipe section in the notebook.
Completely filled the books section in the notebook.
Used Burst in battle 50 times.
Achieved a Special Ops rank of A0.
Gathered all 5 lost arts quartz.
Completely filled the fishing section in the notebook. (All 30 types of fish + Rod Lv. Max)
Took all landscape photos and reported them to Rex.
Opened every trial chest.
Inflicted Break over 800 times.
Spent the evening before the final battle with Alisa.
Forged a strong bond with Kurt, Ash, Elliot, Machias, Jusis, Gaius, and Crow.
Spent the evening before the final battle with Elise.
Spent the evening before the final battle with Alfin.
Spent the evening before the final battle with Towa.
Spent the evening before the final battle with Sara.
Spent the evening before the final battle with Fie.
Spent the evening before the final battle with Emma.
Spent the evening before the final battle with Laura.
Spent the evening before the final battle with Musse.
Spent the evening before the final battle with Altina.
Spent the evening before the final battle with Juna.
Forged a strong bond with Celine and Duvalie.
Used over 500 follow-up attacks in battle.
Used Rush in battle 100 times.
Raised any two characters to Link Level 7.
Raised a master quartz to level 10.
Earned an S-Rank on any act.
Completed the game on nightmare difficulty.
Reached the true ending.
Completed the finale.
Won 100 battles.
Completed Eventide.
Completed Act 3.
Won a battle with a tactical bonus of x3.0 or greater.
Used Brave Order in battle over 100 times.
Completed Act 2.
Completed Fragments.
Used 100 S-Crafts in battle.
Completed Act 1.
Completed the prologue.
Infiltrated Orchis Tower.