Auto-translated
A short story about a Walkthrough :).
After scouting the map, I couldn't find another way except through the Chaos Dungeon. So, I decided to buy a Rogue, as he is the only Hero who can max out the Stealth skill. For some reason, I named him LeSHiJ-MaX. Then, I looked for the shortest path, along which I had to max out Stealth and get through the dragons. I also initially boosted Death magic to create a Ninja with his signature poison ability. But then I abandoned this idea because my path led through the University, where I took Death magic with the "Poison" spell and Life magic with the "Heal" spell (I took Life magic for summoning a ship). I wanted to take Nature magic with "Summoning," but it turned out that it doesn't work on the map. So, I restarted from the University and also took Chaos magic with Haste. I spent a long time save-loading until I got the 3 spells I needed.
In parallel, I was leveling up the Darkstorm Sorcerer and the Fiona Druid so that, starting from the captured Castle of Death, I could immediately head towards three Castles at once. An interesting moment in the Walkthrough turned out to be the two Garrisons. In the first one, there were a lot of Air Elementals and a lot of ballistae, and I couldn't figure out how to get through them. But the rules of this tournament helped me))). Studying the map in the editor, I noticed that the first garrison could be bypassed by dragging, which I did. The second garrison was technically easy to pass. I bought a Druid in the tavern nearby and a Mage Staff and a Potion of Disappointment in the forge. The Druid summons fairies first to exhaust the centaurs' arrows and then to bite them, although the battle threatened to be long. But then an interesting episode occurred. I approached the garrison, detached the Rogue, and he suddenly climbed into the garrison. I try to make him go through, but he doesn't. I go into the lineup and move him to the bottom, exit the lineup, and he is already behind the garrison. And I didn't bother with the garrison but simply passed it by dragging, although I bought another Hero, but that wasn't decisive.
I captured the Castle of Death and started building ships so that two of them would end up in the water I needed, where a level 1 artifact was floating nearby. While the skeletons were swimming for the artifact, the Rogue rushed for the boots that were lying with the vampires. And then the weakest Hero sailed to Death to simply capture the Castle, thinking that my main Hero would later jump over and punish all the evil creatures and Death Knights. Meanwhile, the Rogue with the boots and the artifact fled to his native Castle. There, on the water, was a yellow portal, and at the exit, a little more than a day's journey away, stood the Barbarian Castle. The Sorcerer and the Druid, who had gained a good level by that time, sailed to the green Castle. I captured the Castle of Death and the Castle of Might in one day, but it turned out to be longer to sail to the Castle of Nature, and I captured it one or two days later. And then I just waited 3 days.
That's all my Walkthrough :D.