How do you unlock Sasuke vs killer b in naruto Ultimate Ninja Storm 2?

Answer 1

Start the mission with the cursed jutsu master. He will send you locations of new cursed dolls when you finish different arcs. Check your wanted list for the locations when you collect the first set of cursed dolls he will send you a letter giveing you locations of the cursed doll Sasori and Chiyo. They will be stronger than the ones you faced before. Retrieve them and return to the cursed jutsu master. Now exit the village and he will give you locations on the cursed dolls Kakuzu/Hidan then Jirayia/tsunade. Now go to him and he will give you locations on Pain/Konan/Madara. Now give them to him and he will try to kill you with cursed dolls. He will make you fight two rounds of cursed dolls before fleeing. Next tsuande will tell shizune's men to locate the cursed jutsu master and naruto to wait. Exit the village you will receive a letter. Take it to tsuande and she will reads the letter that killer b a cloud ninja who knows how to control his jinjurkey has been captured and you will be taken to the fight with sasuke and killer b. Once the fight is done go to orochimaru's hideout and you can fight the cursed jutsu master's ultimate creation.