Here is the full list of all 48 Voice of Cards: The Isle Dragon Roars achievements.
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.
Saved up the maximum amount of gems.
Obtained Mysterious Card 7.
Won the battle against the island hermit.
Won a round on Add Skills at the game parlor.
Completed Chapter 6.
Collected all skill cards.
Successfully fled a battle.
Obtained Mysterious Card 9.
Obtained Mysterious Card 8.
Completed Chapter 5.
Completed Chapter 4.
Obtained Mysterious Card 6.
Completed Chapter 3.
Obtained Mysterious Card 5.
Completed Chapter 2.
Obtained Mysterious Card 4.
Obtained Mysterious Card 3.
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.
Unlocked all achievements.
Viewed all endings.
Completed your collection.
Collected all item cards.
Collected all equipment cards.
Collected all character cards.
Collected all enemy cards.
Obtained more than 50,000G.
Obtained the protagonist's strongest weapon.
Obtained Ridis's strongest weapon.
Began a game using saved data carried over.
Defeated the Dragon's lingering hatred in the Vexing Cave.
Witnessed the game master fall asleep.
Learned a new skill from a suspicious doctor.
Won the battle against the mysterious knight.
Won a round on Add Events at the game parlor.
Won a round on Include All at the game parlor.