Here is the full list of all 52 Ys: Memories of Celceta trophies - there are 40 bronze, 9 silver, 2 gold and 1 platinum.
Acquired all trophies.
Cleared the game on Nightmare difficulty.
Played extensively as Frieda.
Mastered every skill.
Acquired at least one of every item.
Purchased every piece of info from Mouse.
Played extensively as Calilica.
Proved your skill as a merchant.
Filled out all monster details in journal.
Opened every treasure chest.
Played extensively as Ozma.
Filled out all material details in journal.
Amassed one million gold.
Played extensively as Karna.
Successfully completed every quest.
Conquered Boss Rush without a single retry.
Conquered Boss Rush.
Defeated a boss in Time Attack without taking damage.
Defeated a boss in Time Attack in thirty seconds or less.
Completed the Map of Celceta.
Cleared all obstructed paths.
Discovered every resource point.
Found all of Mishy's hiding spots.
Restored all lost memories.
Played extensively as Duren.
Endured all of Zara's tickle sessions.
Befriended all animals.
Defeated the ruler of the Great Forest.
Enhanced a weapon or armor to its limit.
Completed the main story.
Overcame Gruda's trial.
Opened the door to the Temple of the Sun.
Acquired both halves of the Mask of the Sun.
Defeated a rare golden foe.
Arrived in the ruined capital, Elduke.
Walked an extraordinary total distance.
Located the underground village of Danan.
Achieved five hundred Skill Finishes.
Reunited with Eldeel at the Tower of Providence.
Defeated two thousand enemies.
Successfully arrived in the Primeval Lands.
Resolved the polluted river dilemma.
Successfully used Flash Move fifty times.
Successfully used Flash Guard fifty times.
Played extensively as Adol.
Defeated Duren in one-on-one combat.
Achieved one thousand Aerial Combos.
Solved the mystery of the missing villagers.
Achieved five hundred Excellent Kills.
Discovered a settlement in the Great Forest.
Successfully rescued the trapped miners.
Began your adventure in Celceta.