Shadow of Darkness bonus quest:
To unlock the “Shadow Of Darkness” bonus quest at Synethesia, beat Story mode with all default characters and the “Fire Major”, “Aqua Major”, “Rock Major”, and “Elec Major” titles.
Unlockable Characters:
Unlock the following characters by performing the corresponding tasks:
CHARACTER – HOW TO UNLOCK
Asuka – Beat Daichi’s Story mode
Gyamon – Beat Guy’s Story mode
Koki – Beat Hibito’s Story mode
Shura – Beat Kairu’s Story mode
Zeke – Beat all quests, including the “Shadow Of Darkness” bonus quest, to unlock Zeke in Wi-Fi battles.
Major titles:
Unlock the following titles by beating the corresponding Story mode:
TITLE – HOW TO UNLOCK
Earth Major – Beat Earth Hero’s Story mode
Elec Major – Beat Thunder Hero’s Story mode
Fire Major – Beat Fire Hero’s Story mode
Water Major – Beat Water Hero’s Story mode