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Sewa, yeah, that's true. What surprises me the most is that a person who can come up with such intricate maps treats their testing so carelessly. Regarding the witches who don't learn banned skills. In 3 Hoch Smash, I also noticed a similar issue. There's a specialist in intelligence without an actual intelligence skill. One slot remained empty for the entire map, but I couldn't find any intelligence anywhere until I got stuck because of bugged underground gates (I estimate that about 80% of the map had already been completed). Probably, the skill is given somewhere before the final stage, or the author simply forgot about it.
Regarding Rise of the Sun King. RoseKavalier wrote that there are also problems with a hero or heroes who are given thousands of ballistas, but after one battle, the ballistas disappear, which stops the Walkthrough. I, after getting stuck with Der Operator, and having some experience with two other maps by Nautilus, decided not to continue the game. As I see, I was right. It's also bad that the author doesn't respond to messages sent by email; maybe I just have an outdated version, I don't know.
Added 30 minutes later
It's even more disappointing that Rise of the Sun King, even with a quick look in the editor, has the potential to be considered the best fan-made map for the third game. It's a pity that it's unplayable.
Added 14 minutes later
Heroes who have mega-armies, mega-stats, the Sign of Courage, and also War Shackles applied to them. This is what I thought about while playing Xiedu and cleverly defeating tough enemies: give them War Shackles, and it will become even more difficult. Several (!) jailers releasing ten heroes (!) one after another. In general, Rise of the Sun King is like Xiedu, but with the principle of "faster, higher, stronger."