Here is the full list of all 19 YOHANE THE PARHELION -BLAZE in the DEEPBLUE- achievements.
Rescued Dia
Rescued Kanan
Began Yohane's new adventure
Rescued Chika
Earn every other achievement
Rescued Hanamaru
Rescued Ruby
Rescued Riko
Rescued Mari
Rescued You
Completed Chika's quest
Completed Dia's quest
Completed Kanan's quest
Completed Hanamaru's quest
Completed Ruby's quest
Completed Riko's quest
Completed Mari's quest
Completed You's quest
Reached the ending