Here is the full list of all 48 Voice of Cards: The Isle Dragon Roars achievements.
Unlocked all achievements.
Witnessed the game master fall asleep.
Won a round on Include All at the game parlor.
Learned a new skill from a suspicious doctor.
Completed your collection.
Collected all character cards.
Viewed all endings.
Collected all enemy cards.
Obtained more than 50,000G.
Collected all equipment cards.
Began a game using saved data carried over.
Collected all item cards.
Saved up the maximum amount of gems.
Obtained Ridis's strongest weapon.
Defeated the Dragon's lingering hatred in the Vexing Cave.
Completed Chapter 7.
Collected all key item cards.
Reached MAX LV with one character.
Obtained Melanie's strongest weapon.
Obtained Mysterious Card 10.
Obtained Mar's strongest weapon.
Obtained Bruno's strongest weapon.
Won the battle against the mysterious knight.
Obtained Mysterious Card 7.
Obtained the protagonist's strongest weapon.
Won the battle against the island hermit.
Completed Chapter 6.
Collected all skill cards.
Obtained Mysterious Card 9.
Obtained Mysterious Card 8.
Completed Chapter 5.
Completed Chapter 4.
Obtained Mysterious Card 6.
Completed Chapter 3.
Won a round on Add Events at the game parlor.
Obtained Mysterious Card 5.
Successfully fled a battle.
Completed Chapter 2.
Obtained Mysterious Card 3.
Won a round on Add Skills at the game parlor.
Obtained Mysterious Card 4.
Struck foes with elements they are weak to thrice in a single battle.
Completed Chapter 1.
Played at a game parlor for the first time.
Won a round on Simple at the game parlor.
Obtained Mysterious Card 2.
Obtained Mysterious Card 1.
Defeated all enemies without taking any damage.