Tactics for the Swamp (Fortress).

Still, it's not a swamp castle, but the Barbarian castle is the most inconvenient one at the beginning of the game.

But in my opinion, Inferno is much more difficult at the beginning, sorry for the off-topic.

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Water is useful if you have Earth or Air.

Play The Succession Wars 3, you'll probably change your mind ;) I'm not against Earth or Air, but often water is VERY useful too...