Here is the full list of all 37 Adventures of Mana trophies - there are 22 bronze, 9 silver, 5 gold and 1 platinum.
Defeat the Dark Lord.
Defeat the Chimera.
Defeat the Golem.
Defeat the Cyclops.
Defeat the Metal Crab.
Defeat the Mind Flayer.
Defeat Medusa.
Defeat the Ankheg.
Defeat the Vampire.
Defeat the Hydra.
Defeat the Jackal.
Obtain all trophies.
Defeat Marilith.
Defeat the Kraken.
Defeat Ifrit.
Defeat the Lich.
Defeat the Mantis Ant.
Defeat Garuda.
Defeat the Dragon.
Defeat the Red Dragon.
Defeat the Zombie Dragon.
Defeat Julius in his first form.
Defeat Julius in his second form.
Defeat Julius in his third form.
Finish the game.
Obtain 100,000 gold.
Attain level 99.
Attain 99 STR.
Attain 99 INT.
Attain 99 VIT.
Attain 99 MND.
Obtain all weapons.
Obtain all magic spells.
Obtain at least one of all items.
Obtain all armor.
Obtain all helms.
Obtain all shields.