Tactics for the Swamp (Fortress).

I completely agree with kirill; indeed, thanks to its defenses, it's easier to capture treasure cities with the Swamp than with other castles. Another undeniable advantage of the Swamp is that this castle is not easy to besiege due to its large moat, glyphs of terror, and blood obelisks. My favorite hero in the Swamp is Bron, because he has a good specialty, and you start the game with basilisks, which hero else can boast something like that? I mainly play Heroes with friends, and none of them consider the Swamp to be the "weakest city"; it's just that if you don't delve deep, you see more drawbacks than advantages in this castle.