Current questions and answers regarding the map editor.

I watched Abyss. I tried to do it as you suggested, by analogy. For example, I took a destroyed wall, which should be an obstacle. But the creatures still pass right through it. Could you take a look and tell me what the mistake is?

I've never made an arena before, but I assume that everything here is the same as with regular maps. Objects of type Arena Objects are not obstacles in themselves. You can try to cover the area under the walls with the Mask tool, or change the properties of the object.