Tactics for the Swamp (Fortress).

You mean heated debates? ))) Look at the dates of the posts. That was a while ago.
And yes, newbies don't like the Swamp, because they don't know how to play it.

Leader, which Castle do newbies prefer to play? :) Dungeon or Castle? And still, a newbie isn't hopeless. :) For example, I'm still a newbie. By the way, yesterday I lost my first online match. But I do want to learn, and I will. ;) But there's also a type of player who simply doesn't want to learn, not just from their own mistakes, but even from others'. This type of person is called a hopeless case. :)
P.S.: Sorry for the off-topic.

The Crystal doesn't fly, it runs:D

Yes, the Crystal is quite the comedian. :) When I first saw it, or rather, its movement animation, I laughed for a long time. :D

Quiet horror. Spending 2 slots, 6 level-ups, 3 days of construction, money and resources on something that is easily defeated by Griffins (sometimes even at level 11) or tactics (which is also not uncommon), and doesn't need to be fought with Gnolls after 2 weeks, having Hydras and other powerful creatures.

Why take it so literally? I was just pointing out a useful spell that forum users don't mention (or mention rarely) – "Forgetfulness" – and one way to use it. And this scenario is possible.
For example, you take a neutral Castle with Snakes and Wyverns, where there are unbought slow-moving infantry units. The main hero takes the Castle, followed by a secondary hero, who has learned the "Water Mastery" skill and the "Forgetfulness" spell (by the way, Juristis correctly pointed out that "Forgetfulness" can be in the form of a scroll, and it's not necessary to build 3 levels of magic for this; also, to learn the spell, it's not necessary to build magic in the Castle; I, for example, often don't build a Guild of Mages in my main Castle at all, or I build it if I have a hero with Literacy). There are three paths from the Castle in different directions. On one side, there are infantry units, and on the other two, archers. The hero's main direction is along the path with the infantry. Will you spend another day breaking through/transferring the Snakes to the second hero, and then back, or will you send the second hero with "Forgetfulness" and the unbought infantry?
I understand that this is a specific case, but as practice shows, Heroes is a game of specific situations.