Not even a hair was left

"What? You're saying someone has taken over the second and third floors, and won't let you go up?"

At the cash register, the supermarket manager listened to the chosen ones' complaints with a slight frown. 

This means someone has become powerful enough to dominate others, able to occupy two floors for a direct sweep. This isn't unheard of, but it's not good news for him. 

If the chosen ones are too strong, they could kill the hunters.

Treasures and such are not a big deal, after all, the really valuable stuff is hidden underground, guarded by a ruthless expert, it's definitely safe! 

However, this instance, in essence, is just a promotion held by the mall in the thrilling world. Those hunters, apart from a very few who are mall's ghost servants, are mostly long-term customers of the mall.