Genma Onimusha

Alternate costumes:
Successfully complete the game under the hard difficulty setting to unlock Samanosuke's alternate costume.

Successfully complete the game with an S rank by getting all of the Fluorites to unlock Kaede's alternate costume.

Speed trial mini-game:
Collect over 20 Fluorites (blue rocks) during game play. Complete and save the game. The Onimusha Spirits speed trial mini-game will be unlocked. Successfully complete the mini-game to unlock the "Ultimate mode" option, which allows the game to be played with the Bishamon Sword, unlimited ammunition, 99 Soul Absorbers, and automatic magic regeneration.
Easy mode:
Start a game and die about five times under the normal difficulty setting. After enough deaths, a message will appear, stating that a new easy mode is open. Note: You cannot achieve an S rank when playing in easy mode.

Difficult mode:
Successfully complete the game with a time under three hours.

Ultimate mode:
Successfully complete the game under the hard difficulty setting with any rank except for S. Alternately, successfully complete the Onimusha Spirits mini-game.

X rank:
Successfully complete the game in difficult mode without using the Bishamon Sword, get and wear the Ogre Armor, and collect all of the Fluorites.

 