Tactics for the Swamp (Fortress).

Swamp is a strong and inexpensive castle, slightly weaker than Dungeon, Rampart, Necropolis, and Conflux in my subjective opinion, and a bit stronger than the rest. It almost always has a strong spawn point on random maps. It has thick, cheap units – crocodiles, gorgons, and hydras. The unit at level 6 in the army often gets the first turn. And even dragonflies often get the first turn. You can play as Swamp against any castle with roughly equal chances, but it can be difficult for Barbarians or Dungeon against, for example, Rampart or Dungeon.