Walkthroughs for custom maps.

Arthur attacks; he doesn't hide in his Castle like the neighboring Prince.

And our hero must attack him when he's in the city! We need to plan our move carefully and use the Water Walking ability.

The lack of a city portal is exhausting.

This is where I made my biggest mistake: having the Summon Boat spell and Water Walking, I could have already retrieved the Tome of Earth Magic, which is located behind the Dungeon Gate in cell 65,50.
Besides, by loading later saves, I saw that I was stuck for a long time before defeating King Arthur. I'm glad that my gameplay has improved significantly since then.

Could you provide more details about the clones?

A feature of the game: any clone has the same abilities as the original stack at the very beginning of the battle. The Archangel clone revives, the Archer clone has a full supply of arrows, etc.
Perhaps I should record a video of this battle for you?