Halloween 2017 Event Re-Run/Free Quest/Himeji Castle

Gable
Clear Mission No. 55 to unlock

Warriors Running Passage
Clear Chapter 4 to unlock

Double Gates
Clear Mission No. 46 to unlock

Armory
Clear Mission No. 62 to unlock

Bretèche
Clear Mission No. 60 to unlock

Stoning Shelf
Clear Mission No. 39 to unlock

Warriors Hiding Spots
Clear Mission No. 19 to unlock

Oriental Plover​ Gable
Clear Mission No. 49 to unlock

Great Eastern Pillar
Clear Chapter 5 to unlock

Great Western Pillar
Clear Mission No. 77 to unlock

Left Shachihoko
Clear Mission No. 25 to unlock

Right Shachihoko
Clear Mission No. 64 to unlock