Items will need to be found in one part of the castle to unlock doors or otherwise bypass obstacles elsewhere in the castle and sometimes the player will take control of Samanosuke's companion Kaede while Samanosuke is incapacitated in some way. Kaede can reach some locations that are beyond Samanosuke as well as pick locks and throw kunai but she can not absorb souls or open any lock intended for the wearer of the Ogre gauntlet.