Here is the full list of all 48 Voice of Cards: The Isle Dragon Roars achievements.
Defeated the Dragon's lingering hatred in the Vexing Cave.
Collected all equipment cards.
Began a game using saved data carried over.
Completed Chapter 7.
Collected all key item cards.
Obtained Bruno's strongest weapon.
Obtained Melanie's strongest weapon.
Obtained Mysterious Card 10.
Obtained Mar's strongest weapon.
Witnessed the game master fall asleep.
Learned a new skill from a suspicious doctor.
Obtained Ridis's strongest weapon.
Collected all item cards.
Obtained the protagonist's strongest weapon.
Obtained more than 50,000G.
Reached MAX LV with one character.
Won the battle against the mysterious knight.
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.
Obtained Mysterious Card 7.
Completed Chapter 4.
Obtained Mysterious Card 4.
Completed Chapter 3.
Saved up the maximum amount of gems.
Obtained Mysterious Card 5.
Obtained Mysterious Card 6.
Completed Chapter 2.
Struck foes with elements they are weak to thrice in a single battle.
Obtained Mysterious Card 3.
Completed Chapter 1.
Successfully fled a battle.
Won a round on Include All at the game parlor.
Won a round on Add Events at the game parlor.
Won a round on Add Skills at the game parlor.
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 character cards.
Collected all enemy cards.