User blog comment:Disfigure/Shalltear Bloodfallen's Bad End Battle w/a Certain Dragon Lord/@comment-33177490-20170910021929

"Her dress was in tatters, its remnants plastered to her body. However, the highest-grade items on Shalltear's body and the parts hidden by them were untouched."

I'm guessing that Shalltear must have fought the "???" Dragon Lord without using her Valkyrie Armor.