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.
Cleared the game in FROM mode.
Cleared the game with the princess restored.
Visited all maps.
Spent the night in Raejack with the princess.
The princess was restored to her true form.
You found Ai.
You found Sue.
Cleared the Spelunker event.
Cleared Spelunker mode.
Survived Spelunker mode for 10 hours.
Defeated Kraken without taking damage.
Defeated Giga Golem without taking damage.
Defeated Queen Bee without taking damage.
Defeated Eelagon without taking damage.
Acquired a sword from King Block.
Maxed out the Giga Sword.
Maxed out the LIFE bar.
Booked all monsters in the Bestiary.
Booked Onyx in the Bestiary.
Made your sword stronger at the blacksmith.
Cleared the game without dying.
Cleared the game without restoring the princess.
Defeated Onyx without taking damage.
Defeated Fuelle without taking damage.
Booked Fuelle in the Bestiary.
Defeated Dark Knight without taking damage.
Acquired the Hero Shield.
Maxed out the MAGIC bar.
Defeated a foe with a bow.
Booked Dark Knight in the Bestiary.
Acquired the Hero Sword.
Defeated Dragon without taking damage.
Booked Dragon in the Bestiary.
Collected 777G.
Booked Queen Bee in the Bestiary.
Booked Eelagon in the Bestiary.
Booked Kraken in the Bestiary.
Played the game for five hours.
Booked Giga Golem in the Bestiary.
Defeated a foe with a bomb.
Acquired the Holy Sword.
Booked a monster in the Bestiary.
Guarded an attack.
Used a Shader Magic.
Took a snapshot.
Acquired the Ancient Sword.
Defeated a Guardian.
Defeated a foe with a sword.
Made a character model.