Samurai Warriors: State of War is set in the Japanese civil war, when great commanders such as Nobunaga Oda, Shingen Takeda, and Kenshin Uesugi struggled for control of the country. Arm yourself with classic Japanese weaponry such as katanas and shuriken, and launch into the chaos of the 16th century Japan. The action is relentless, and ranges from massive open-field warfare to sieges of trap-laden castles.

Bonus characters:
Successfully complete the indicated character's campaign to unlock the corresponding bonus character.
Goemon Ishikawa: Complete Magoichi's first campaign.
Hanzo Hattori: Complete Yukimura's second campaign.
Hideyoshi Hashiba: Complete Nobunaga's first campaign.
Ina: Complete Yukimura's Second Campaign
Keiji Maeda: Complete Magoichi's first campaign.
Kunoichi: Complete Yukimura's first campaign.
Masumune Date: Complete Tadakatsu's first campaign.
Mitsuhide Akechi: Complete Nobunaga's second campaign.
Noh: Complete Nobunaga's first campaign.
Ranmaru Mori: Complete Nobunaga's second campaign.
Shingen Takeda: Complete Yukimura's first campaign.
Tadakatsu Honda: Complete Yukimura's second campaign.
Yoshimoto Imagawa: Complete Tadakatsu's first campaign.

Ultimate Warrior story:
Successfully complete the Ieyasu's Volition, East United, West United and Nobunaga's Ambition stories to unlock the Ultimate Warrior story. This story features Samurai Warriors and Dynasty Warriors characters. It will appear as the fourth campaign for all characters.

Maximum stats:
Successfully complete all story mode levels for all characters to gain the ability to increase any stat to the maximum.