Tactics for the Swamp (Fortress).

Here is the translation of the provided Russian text into English, following all specified rules and terminology: I'll share my experience playing as the Fortress, after all it's my favorite town.
Let me clarify right away, this is about playing on SoD, the 2sm4d(3) template, in an ONLINE game.
1. I start with Bron. Tazar is certainly better, but the Basilisks are the deciding factor. Their piercing power increases substantially; for example, on the second day (when the Basilisks are built in the capital), you can take the minimal conservatories. That's a convincing argument for me. I also respect Vistina and the Dragon [hero], but I don't take them. The Dragon's Gnolls crumble very quickly, and Vistina requires a built Lizard Den, plus another day for the upgrade. Since all heroes fight anyway, the secondary hero is picked from among 2-3 (usually Fortress, Barbarian, or Conflux) depending on who got good secondary skills.
2. Whoever says that the Fortress respawn is protection against quick enemy rushes is talking nonsense. The enemy will arrive by road, while you'll have to slog through the swamp with Angels and leftover troops.
3. In the first week, the following are taken: all Crypts (on day 111), Medusas are better taken with Wyverns, Gnome Huts are taken up to 20. A stack of 30 isn't taken with the standard town army (personally for me). All Imp Huts are taken. Naga Banks are a minimum. If you're lucky and can break the Hive guard, the standard army can take a Hive with many Serpents. You can lose at a Stronghold.
4. If Hydras in the town on the first week are normal in TE, then in SoD anything can happen. The variation is very large. Therefore, on the second week there are two options.
First. If you have Hydras, we break all the second-week conservatories and Hives.
Second. If there are no Hydras, we break the second-week double-conservatories and accumulate Wyverns to break more powerful conservatories.
5. As a result, if you manage to build Hydras, you can start looting treasure zones with Angels and Wyverns with Hydras on the second week; if not, the treasure zone is often on the third week.
On the second week, I always make the upgrades: Dragon Flies (all the speedsters run faster, shooters are broken more easily, it costs little gold); if there are many Gnoll external dwellings, I upgrade them and get a devastating stack. Lizardmen come later. Although it all depends on the map; if there are many ground walkers, Lizardmen rule. There are no strict rules here.
6. When the time comes for the main hero to go to the treasure zone, but the zone still needs clearing, for Fortress I often split off a Hydra, and on another zone an Angel, and the speedsters take Crypts and simple guards.
7. Regarding units.
Gnolls - in large numbers (over 50) are a weighty argument, often your only hope, plus they are free from external dwellings. If there are several dwellings, you can upgrade on the first week.
Lizardmen - excellent armored shooters; with Dragon Flies present, they need an ammo cart; if you can find one, you can fight quite effectively by mowing down a horde of Golems or Zombies. Upgraded ones significantly increase their shooting power.
Dragon Flies - a unit that much depends on. Fast speedsters, shooter blockers, and a fast unit that allows you to kite neutrals across the field.
Basilisks - at the beginning of the first week with Bron, they are the main attacking stack. If there's an external dwelling, it's a major stroke of luck (hardly anyone would refuse 15+ Basilisks on the first week).
Wyvern Monarchs - in SoD, the upgrade requires building a Resource Silo - a fly in the ointment. The best level 5 unit. Save them for Dragon Utopias.
Wyverns - the striking stack in the treasure zone; diligently look for Trees of Knowledge, don't miss a single one. Upgrading Wyverns makes them very formidable.
Hydras - on the second week, they are the key. All Hive assaults rely on them. They don't falter in conservatories either. No retaliation plus powerful defense and multi-head attack are good cards in the hands of a Fortress hero. Upgrading Hydras significantly increases their health.
Among the might heroes - all are good. Tazar is the best. Among the magic heroes, I like Rosic (shooter in the spellbook) and Andra (increased mana pool).