Completion bonuses
Successfully complete the game on the normal difficulty setting to unlock the hard difficulty setting, movie gallery, voice test, background music, and continue mode options. Successfully complete the game on the hard difficulty setting to unlock artwork for the characters, enemies, and stages. Successfully complete Continue mode to unlock the Boulder Piercer weapon for Benkei and the Gale weapon for Yoshitsune.

Hidden cover
Slip the cover sheet out of the game's case and look at the back to find alternate cover art.