In the second game, Ieyasu is already allied with Nobunaga and aids his ally by attacking the larger Asakura army at Anegawa. He then tries to attack Shingen but falls victim to the elder general's ambush. Escaping with his life, Ieyasu mourns the vassals lost for his safety. Tadakatsu assures him that they died protecting the world of peace his lord envisions, strengthening Ieyasu's resolve. Shingen and Nobunaga eventually pass away and Ieyasu becomes one of the two powerful men of the land. To settle their differences, he challenges his rival, Hideyoshi, at Komaki-Nagakute. Although he won the battle, Ieyasu thought that killing his rival would only throw the land into confusion once more. Therefore, he keeps his ambitions in check and lets Hideyoshi rule for the time. As he assists the western siege at Odawara Castle, he gains Masamune as an ally.
After Hideyoshi's passing, Ieyasu decides to set his plans into action and clashes with the Toyotomi loyalist, Mitsunari. After winning the battle of Sekigahra, Ieyasu becomes shogun and finally unites the land. Remaining Toyotomi loyalists band together to oppose him at Osaka Castle. Fearing that failure to affirm his grip would throw the land once more into chaos, he leads his army to destroy them. With the land finally at peace, Ieyasu has completed his arduous journey for unity.
His dream stage focuses on a "what if?" scenario prior to the Battle of Sekigahara. Ieyasu and Ina are unexpectedly isolated from their allies when Kanetsugu and the Uesugi army heads straight for their location. His enemies also include the Sanada army from Ueda and Yoshinobu Satake.
Ieyasu begins his story in a similar manner as his previous story in Samurai Warriors 3 and his goal for peace is emphasized. Slaying Nagamasa at Anegawa, the Oda army conquers the Takeda and the land has a brief reprieve from war. Ieyasu stations himself near Kyoto to oversee the growing serenity until Nobunaga suddenly dies at Honnoji. Determined to live and see his friend's dream for peace realized, Ieyasu flees. Breaking through Kotarō and Motochika at Iga, he safely arrives in Mikawa. After Hideyoshi slays Mitsuhide, it became a manner of time before the powerful generals would compete their ambitions against one another at Komaki-Nagakute. During the conflict, they both grow to respect one another and realize that they truly shared similar goals. When Ieyasu defeats Hideyoshi, he insists that they work together to achieve the dream that their lord sought.
He gladly supports Hideyoshi's vision until the latter's natural death. Mitsunari, who disagrees with Ieyasu being the land's greatest man, assembles an army to oppose him. For the hopes of his fallen friends and for the future, Ieyasu defeats him at Sekigahara and Yukimura at Osaka Castle. Naming Yukimura as the greatest warrior in the land upon the younger man's death, he is pleased to see everyone's dream fulfilled at last and desires to treasure the hard-fought peace.
Super Smash Sisters Role
Ieyasu Tokugawa is an NPC fighter in SSS. He uses his Houqiang (spear cannon) to fight in battle, the spear part for close and opens it up to reveal to cannon hole for ranged cannon use. With the girls from Mikawa at his side, he could hope to achieve his dream of peace.