Here is the full list of all 30 Jinshin achievements.
Watched the opening.
Increased party members.
Gained support of the Amaterasu Clan to search for taken away Gotoku.
Entrusted to command the first battle.
Encountered new Onigami, Kegare.
Learned the name of the girl who appeared in dreams asking for help.
Gentle-looking boy was the governor of the Shirogane Province.
Saved Nunato from Onigami Ichigan.
Defeated Onigami Yatsukubi and gained the Soulblade.
Defeated Ichigan but Gotoku became an Onigami.
Gained cooperation of the Emperor and Suseri to search for Gotoku.
Princess Iyo's grave was destroyed and Tatara Village was attacked by Onigami.
Underworld Cauldron was opened and calamities overflowed.
Remembered the memory of fighting together with Nunato.
Hitomaro's true identity was Emperor Okimi.
Reached the Normal Ending.
Suseri and Daikoku who head for the Underworld Cauldron disappeared.
Revealed the ambition of eradicating the obsolete and creating a new race.
Identity of the mastermind who even led Amasusa was...?
Reached the Mythical Ending.
Reached the Historic Ending.
Completed all the requests.
Cleared Beginner level of the Arena.
Cleared Intermediate level of the Arena.
Cleared Advanced level of the Arena.
Cleared Expert level of the Arena.
Cleared all Beginner Awards.
Cleared all Intermediate Awards.
Cleared all Advanced Awards.
Cleared all Expert Awards.