Unlock the following bonuses by performing the corresponding tasks:
Boss Only mode
To unlock Boss Only mode, obtain the Mysterious Button from D'Artagnan on level 5 under the Normal or higher difficulty.
To unlock the Fear difficulty setting, obtain the terror medallion from one of the three black star enemies on level 4 under the Hard difficulty setting. Then, complete the game under the Hard difficulty setting.
To unlock the Planeriel difficulty setting, obtain the nightmare medallion from the Nightmare Of Legend enemy on level 3 under the Fear difficulty setting. Then, complete the game under the Fear difficulty setting.
To unlock the music room, find the music room key on level 6 under the Normal or higher difficulty setting.
Vizet Boot Camp - Finish Tutorial.
Ancient Scholar - Collect all Archive artifacts.
Bone Collector - Collect all items.
Artifact Collector - Collect all Artifacts.
Boss Only Mode - Obtain the Mysterious Button.
Magic Knight - Defeat NORMAL, Magic Knight mode.
Sacred Knight - Defeat HARD, Sacred Knight mode.
Terror Knight - Defeat FEAR, Terror Knight mode.
Music Room - Obtain the Music Room Key.
Brave Knight - Defeat Boss Only mode.
Pale Mist Knight - Defeat PLANERIEL, Knight of Nightmare mode.