Extra costumes:
Beat Musou mode with any character. Now at the character select screen, choose that character using Triangle.

Power names:
Create a new general and give him one of the following names for the desired stat increase:

Name	Stat Bonuses
Damascus	All
Doji	All
Guan Yu	Sword, Naginata, Horse, Archery
Honda	Sword attack power
Kabuki	Spear, Naginata
Kato	Sword & spear attack power
Kojiro	Weapon
Kondo	Spear attack, defense
Kotarou	Sword & horse attack power
Musashi	All
Musasibou	Sword, Spear, Horse
Okita	Sword, Spear
Oyu	Spear, Horse, Archery
Sakamoto	Sword, Spear
Sakon	Sword, Spear
Sasaki	Spear attack, Ranged Defense
Shizuna	Jumping, speed, archery
Zhang Fei	Spear

Play as Goemon:
Beat Okuni's campaign.

Play as Keichi Maeda:
In Kenshin Uesugi's story mode, at the Siege Of Gifu, do not eliminate Keiji Maeda. Then beat the game.

Play as Kunoichi:
Beat Hanzo Hattori's and Shingen's campaigns.

Play as Magoichi:
Beat any campaign.

Play as Nobunaga Oda:
Beat Oichi's, Magoichi's, and Noh's campaigns.

Play as Noh:
Beat Ranmaru Mori's campaign.

Play as Okuni:
Beat Keiji Maeda's campaign.

Play as Ranmaru Mori:
Beat Mitsuhide Akechi's campaign.

Play as Shingen:
Beat Sanada's campaign.

Use the Death element on your weapons:
Using a created character, find every volume of "The Book of Five Rings."