Idle Legions · Field Guide
Rotting Marsh
Campaign Act 2, ending with Swamp Hydra. Advance through stages and prepare the act key for the final boss.
Campaign
Difficulty
Explore the same six acts across five difficulties.
Act II Rotting Marsh
Normal · Route preview
Act referenceRotting Marsh · Stop 1
Select a route marker to inspect the path toward the act boss.
The route follows the client’s ten map markers. Your live progress and unlocks are shown in game.
Act Boss
Swamp Hydra
Keep something burning on her: she doesn't heal while burning. Her flame gives a warning, so protect the healer.
Boss tactics
Act championSwamp Witch
Wiki notes & reference links
Campaign
Campaign Act 2, ending with Swamp Hydra. Advance through stages and prepare the act key for the final boss.
Final boss
Progression
Choose your current difficulty in the map menu. Higher difficulties bring tougher enemies and better loot. The act boss requires its key. See difficulties and boss gates.