The editor doesn't open arenas :(. Moreover, when creating a new one, it immediately disappears from the list as soon as you load any map in the editor. Ideally, there should be a way to interact with arenas, as they are available in the video editor. Ment, do you know where they are stored? Maybe they can be opened as a regular map?
Another question, which becomes irrelevant if the answer is negative. Is it possible to specify a particular arena when fighting a specific hero? And to play a specific melody?
Цикл "Закадычные враги": "Особенное гостеприимство, "Супероружие", "Меж молотом и наковальней"
"Падение Шантири"
Кампания для "Кодекса Войны"
"Выбор Сагиттеля"