There's a spirit in there which you can get possessed, cosmetics and effects to not be affected by the fox thingy. You just have to use really strong attacks like 3 dmg then 2 dmg and I think a talisman as well? Anyway yeah.
But then why didn't even one hit work? I told you that I went there in 4 different forms, but nothing happened. Moreover, I hit with everything that was in the inventory.
Just to say this, each area you beat give you one choice to pick a skills, and you need one with more damage or more attacks to really break it. (The chest on the bottom when traveling to different area and all)
