Here is the full list of all 6 Shining Orb Prequel achievements.
Light up all the torches in the cave.
Music is an art, but it's easier to work with great instruments. If only the hidden music instruments could be found. Then it would be a simple task to impress the crowds.
Stay undercover as long as possible. Do not revel yourself in the first level of the temple.
Get a perfect score in the music contest.
Make sure we are ready for everything. We should train to be strong enough, so we may defend what is precious to us.
Prove that you are a true RPG completionist by solving all the secondary quests before fighting the final boss of the prequel.