This is an old request, made even more pertinent because of the ability for monsters to channel armour.
Please stop monsters from being able to armour up so easily in Arena. Either remove all wildlife, or make it so you can’t channel armour in Arena. Alternatively rework the domes so there are no large loops such as the north caves in Distillery. It’s ridiculous how easy monsters can, in some domes, get a down, then just go off and regain a significant chunk of armour which COMPLETELY breaks the balance of the mode.