Make your way to
60.04 93.97 (Bastion) and click to
Ancient Memorial to get
Bénédiction du chevauche-soleilNow go to
61.37 82.67 and wait for rare (if its alive ofc). Jump down, use
Planeur marcheciel and interact to
Danse-Soleil.
While riding it rapidly press
Apaiser extra button. You keep getting damaged while riding the rare, so dont waste your time.
When
Danse-Soleil will calm down, it carries you to the spot where you have obtained the
Bénédiction du chevauche-soleil. You will get
Coup de soleil achievement as well.
Now you can talk to rare and accept its challenge. The fight starts, rare is tough. Bring its hp down to 10% to pass the challenge.