Genma Onimusha

Unlock onimusha spirits speed trial mini-game:
While playing, pick up more than 20 blue rocks. Finish the game and save
to unlock the Onimusha Spirits speed trial mini-game.

Change outfit:
Finish the game and save. Begin a new game and you can access to the
unlocked "Shinnosuke Normal/Special" option. In this option you can
with Samanosuke in a Panda costume.

Samanosuke's new costume:
Finish the game in hard mode once to get access to the new outfit.

Kaede's alternate costume:
Finish the game once and reach S rank. You need to collect all of
the Fluorites to reach S rank.

Unlock easy mode:
If you fail more than five times in normal mode a message will appear,
and the game autumatically unlock the easy mode. Note: You cannot
reach an S rank in easy mode.

Unlock difficult mode:
Finish the game less than 3 hours to unlock the hard mode.

Unlock Ultimate mode:
Finish the Onimusha Spirits mini-game.
or
Finish the game in hard mode and with any rank except for "S".
In the Ultimate mode you can play with the Bishamon Sword, infinite
ammo, 99 Soul Absorbers and auto magic regeneration.

Reach X rank:
Finish the game in difficult mode without using the Bishamon Sword,
pick up all of the Fluorites and get and wear the Ogre Armor.

Onimusha 2 movie:
Finish the game and save. Begin a new game and you can access to the
unlocked "Special Report" option, where you can see the Onimusha 2
movie.

Great armor location:
Look behind the waterfall. There is a cheat, which containing the
Great armor.

Holy Armor location:
Enter to the room where you and Keade get trapped in and you have to pull the
levers. Go through the levers. Now you can reach the chest in the corner, which
contain the Holy Armor.

Enhance gauntlet:
Capture 20,000 souls and when you go to enhance you will have a better
gauntlet. Go when you have 50 to get the Golden Ogre Gauntlet.
Reach 50,000 souls to get the best gauntlet.

Ranking:
The perfect score is 30, meaning you have to score all available points in the
following 3 categories:

Number of souls collected by the gauntlet
Collect 0-34,999 souls = 3 points
Collect 35,000-44,999 souls = 5 points
Collect 45,000-54,999 souls = 7 points
Collect 55,000 or more souls = 10 points

Number of demons killed
Kill 0-399 demons = 3 points
Kill 400-499 demons = 5 points
Kill 500-599 demons = 7 points
Kill 600 or more demons = 10 points

Time taken to complete
Up to 3 Hours = 10 points
3-4 Hours = 7 points
4-5 Hours = 5 points
5 or more Hours =3 points

The points add up as follows:
0-9 = D rank
10-17 = C rank
18-24 = B rank
25-29 = A rank
30 = S rank