All characters (Japanese version)
At the title screen, press Square(2), L1, L2, R1, R2, Square(2) to unlock all nineteen hidden generals.

All Shu generals (Japanese version)
At the title screen, press Square, R1(5), R2(2) to unlock Ma Chao, Jiang Wei, Liu Bei, Zhuge Liang, and Huang Zhong.

All Wei generals (Japanese version)
At the title screen, press Square(3), L1(2), L2(3) to unlock Cao Cao, Xiahou Yuan, Zhang Liao, and Sima Yi.

All Wu generals (Japanese version)
At the title screen, press Square(2), L2(4), L1(2) to unlock Taishi Ci, Sun Jian, Sun Quan, Lu Meng, and Gan Ning.

BGM test option (Japanese version)
At the title screen, press R1(2), R2(2), L1(2), L2(2) to unlock the BGM test selection in the options menu.

Edit mode
Successfully complete musou mode with all characters except Dong Zhuo, Diao Chan, Lu Bu, Yuan Shao, and Zhang Jiao to unlock edit mode in the options menu. Alternately, press L1, L2, R2, R1, L1, L2, R2, R1 at the title screen in the Japanese version of the game.

Alternate introduction sequence
Successfully complete musou mode with any character.

Unlock Huang Zhong, Ma Chao, and Jiang Wei
Successfully complete musou mode with Zhang Fei, Zhao Yun, or Guan Yu.

Unlock Xiahou Yuan and Zhang Liao
Successfully complete musou mode with Xiahou Dun, Dian Wei, or Xu Zhu.

Unlock Taishi Ci, Lu Meng, and Gan Ning
Successfully complete musou mode with Zhou Yu, Lu Xun, or Sun Shang Xiang.

Unlock Zhuge Liang
Successfully complete musou mode with Zhang Fei, Zhao Yun, and Guan Yu.

Unlock Liu Bei
Successfully complete musou mode with Zhang Fei, Zhao Yun, Guan Yu, Huang Zhong, Ma Chao, Jiang Wei, and Zhuge Liang.

Unlock Sima Yi
Successfully complete musou mode with Xiahou Dun, Dian Wei, and Xu Zhu.

Unlock Cao Cao
Successfully complete musou mode with Xiahou Dun, Dian Wei, Xu Zhu, Xiahou Yuan, Zhang Liao, and Sima Yi.

Unlock Sun Jian and Sun Quan
Successfully complete musou mode with Zhou Yu, Lu Xun, Sun Shang Xiang, Taishi Ci, Lu Meng, and Gan Ning.

Unlock Lu Bu in free mode
Successfully complete Stage 2 (Hulao Gate) in musou mode with at least 1,000 KOs.

Unlock Diao Chan, Dong Zhuo, Yuan Chao, and Zhang Jiao in free mode
Successfully complete musou mode with at least one member of each kingdom.

Unlock Side Selection in free mode and BGM test option
Successfully complete musou mode with at least one member of each kingdom.