Posts from Current questions and answers regarding the map editor.

There, instead of a specific player town, you need to place a random town. (in the editor)

Hmm, what kind of towns are on the map? There should be a random town, not specific ones. And the heroes seem to be fine, as you can choose any.

1) I create my hero, let's say from the Demon faction, give him a name, and choose a hero... on the map, my hero (a giant in a hockey mask) stands, just like all the other Demons...
But is there a way to create my own (unique) hero?!
But how? What do I need for that?
2) How do I create icons for heroes? What format is needed? What are the dimensions?

Own - modding.

But you can also modify existing heroes. For example, take a not-so-useful one from a campaign and change them as much as you like.

Select a hero on the right side of the editor, in the column, and in its properties, click shared (...). There you will find the hero's settings.
Regarding icons, it's a complex issue, but the size and format are specified there (it seems to be Dds). You need to place them directly in the map/mod and then, in the hero editor (when editing), find the path to them.

And if all the heroes from the campaigns are needed,
what is required for modding?

extended version of the editor – to create a mod. I didn't go any further, unfortunately, so I don't know.

I didn't quite understand what to do if the hero changes.

Click on the hero you want to modify (first, open the desired map in the editor, as all changes will be saved to it).

On the right, select "shared" (click on "...").

If you don't understand, I'll post screenshots in the next post.

Okay.
I understand.
I know about this, I'm familiar with it, but it's still not exactly what I need.
I saw a group on the social network "VKontakte" where the group administrators create creatures for the game on request.
I saw a mix of an Angel and an Undead.
It's all about free rein to your imagination... (Spider Goddess)
I ALSO WANT TO LEARN THIS TECHNIQUE.
What do I need to do?

well... as I said, modding involves creating your own mod files that affect the entire game permanently (until you delete them, of course).

I've encountered this, but I haven't done it myself. Creating a hero - I can assume that it simply involves creating your own files - descriptions, icons, models, and animations for the hero, and then embedding them into the game by installing the mod. There's nothing particularly complicated about it, you'll probably figure it out.
What might cause difficulties is creating your own model. You'll need to find the required model, embed it in the mod, specify the skeleton, geometry, and animations. This is probably the only thing that could take a lot of time.

And what about the icons... if there isn't a format that is required?

download the program to convert screenshots to DDS format

Added 23 minutes later
Who can upload/give a link to the ID of skills and perks (in yellow, in Russian) for version 3.1???

(I accidentally deleted "ids for script" again (10000+++ times)) =0)

Or tell me the ID of the Necromancer perk "Seal of Darkness"...

From the file archive.
Not here?

When creating the map, I specified that the towns should be random. That's how it turned out. And as for the heroes, you can either choose a random one or select a specific one, just like with the bonus.

Could you tell me where I can download this program?