Ninja Gaiden Playthrough

It's all up to Yakumo to save the world from the dark dragon

Seori gives Ryu the jewel of the dark dragon that he must give to Yakumo to purify the dark dragon

Ryu has to defeat Kurobo to complete the dark dragon ritual

Ryu has to defeat a daemon to allow Seori to meet up with him

Ryu has to defeat a fiend shark to allow Seori to meet back with him

Yakumo must defeat Kagachi 1st then Achilles

Kagachi waits for the arrival of Seori Misaki and Yakumo

Yakumo goes to the D.D.O base then he must destroy a tank he comes across

A shark that Yakumo is after appears just before Ayane and Yakumo fight so Yakumo chases after it to free Seori

Yakumo enters a dimension without being able to communicate to Misaki and Umi