About Swamp Hydra
Keep something burning on her: she doesn't heal while burning. Her flame gives a warning, so protect the healer.
Base attributes
Encounter
Keep something burning on her: she doesn't heal while burning. Her flame gives a warning, so protect the healer.
Boss gate
This is the final boss of Rotting Marsh. Bring the act key and review your formation before starting. Keys are consumed on a victory.
See boss gates and formations.
Campaign Bosses more
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Ancient Ent
Its swipe gives a warning and goes for the healer: cover her with a taunt. Break the bark with the right element and don't drag the fight out after its fury.
Archnecromancer
The Sunken Crypt act boss opens with a bone shield. Watch the encounter warnings and protect vulnerable allies.
Magma Lord
Flare burns everyone near the boss: stand far away or bring fire resistance. The Fireball goes for the farthest hero.