Rimuru is building a dungeon in preparation for the upcoming festival. It will feature treasure chests containing weapons made by Kurobe, and Veldora will inhabit the deepest floor as the final boss. Then Milim suddenly shows up with a suggestion...
How about adding terrain 
effects to some floors?
ما رأيك بإضافة تأثير تضاريسيّ
في بعض الطّوابق؟
Wie wäre es, wenn wir den Ebenen
noch Geländewirkung spendieren?
¿Y si les añadimos efectos
de terreno a los pisos?
¿Y si añadimos efectos
de terreno a los pisos?
Que tal adicionar efeitos
de terreno a alguns pisos?
Может, изменим погодные условия
на разных этажах?