Here is the full list of all 51 3D Dot Game Heroes trophies - there are 42 bronze, 5 silver, 3 gold and 1 platinum.
Congratulations! Thank you for playing this far!
Acquired all the swords.
Visited all maps.
Maxed out the Giga Sword.
Cleared the game in FROM mode.
Cleared the game with the princess restored.
Maxed out the LIFE bar.
Cleared the Spelunker event.
Booked all monsters in the Bestiary.
Maxed out the MAGIC bar.
Spent the night in Raejack with the princess.
The princess was restored to her true form.
You found Ai.
You found Sue.
Cleared Spelunker mode.
Defeated Onyx without taking damage.
Defeated Fuelle without taking damage.
Survived Spelunker mode for 10 hours.
Defeated Dragon without taking damage.
Acquired the Holy Sword.
Defeated Kraken without taking damage.
Defeated Giga Golem without taking damage.
Defeated Queen Bee without taking damage.
Defeated Eelagon without taking damage.
Cleared the game without dying.
Cleared the game without restoring the princess.
Booked Onyx in the Bestiary.
Acquired the Hero Sword.
Acquired the Hero Shield.
Acquired a sword from King Block.
Booked Fuelle in the Bestiary.
Booked Dark Knight in the Bestiary.
Booked Dragon in the Bestiary.
Booked Kraken in the Bestiary.
Booked Giga Golem in the Bestiary.
Booked Queen Bee in the Bestiary.
Booked Eelagon in the Bestiary.
Collected 777G.
Defeated Dark Knight without taking damage.
Played the game for five hours.
Defeated a foe with a bow.
Defeated a foe with a bomb.
Booked a monster in the Bestiary.
Took a snapshot.
Guarded an attack.
Used a Shader Magic.
Made your sword stronger at the blacksmith.
Acquired the Ancient Sword.
Defeated a Guardian.
Defeated a foe with a sword.
Made a character model.