Here is the full list of all 14 Magical Strings achievements.
Complete Ye Qing's Arcade Mode.
Complete Xuan Li's Arcade Mode.
Complete Sui Yu's Arcade Mode.
Complete Long Nu's Arcade Mode.
Complete Arcade mode without losing any rounds.
Use every cadenza in the game.
Play 100 perfect notes.
Play 50 matches in any mode.
Complete the tutorial.
Watched the credits.
As Ye Qing, detonate fire orbs on an opponent in mid-air after landing Bamboo Thrust.
As Xuan Li, K.O. your opponent with a reflected attack.
As Sui Yu, destroy the entire dome shield with Piercing Rock.
As Long Nu, reach max electricity and land Lightning Strike.