Warriors Orochi 2 (無双OROCHI 魔王再臨, Musou OROCHI Maō Sairin, Unmatched Orochi: Rebirth of the Demon Lord) is the sequel to Warriors Orochi. This game features thirteen new characters and eight completely new stages. It also includes several stages from the Xtreme Legends expansion of Dynasty Warriors 5 and Samurai Warriors 2.
In the original game, there was a nine-leveled Proficiency attribute that upgrades characters' special attacks to make them more powerful. It could be leveled by a certain number of combos on a character. Proficiency in Warriors Orochi 2makes characters more resilient to attacks. Defeating five hundred enemies or five generals increases the character's profiency level, to a maximum of 50. Reaching 10 proficiency unlocks the characters' third costume, and in the PSP port reaching 20 proficiency unlocks the fourth costume. Reaching 30, 40, and 50 profiency unlocks more wallpapers of the character in the gallery section.
It is much easier to switch between characters than before. Characters can be switched whilst mounted and during combos.
Each character has also received a particular strategy which is activated after meeting a certain objective.