Campaign Bosses — In Order

Boss 01 · Bay Harbour Docks · Map 1
Bay Harbour Butcher
📍 Bay Harbour · Map 1
The fight that made everyone uninstall. Three phases, an aggro meter that explodes if you ignore it, and catapults that arrive the moment you think you're winning.
Medium Aggro Meter Catapults
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Boss 02 · Mountain Trail · Map 3
The Warden
📍 Mountain Trail · Map 3
A patrol-based boss that punishes static tower placement. His route changes each phase and a wall breach sequence forces emergency repositioning mid-fight.
Medium Patrol Pattern Wall Breach
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Boss 03 · Deep Forest · Map 5
Thorn
📍 Deep Forest · Map 5
One-shots clustered towers with spike attacks. Every phase tightens the safe zone. You need spread positioning and fast burst windows before the spikes reset.
Hard Spike Attacks Spread Tactics
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Boss 04 · Sunken Ruins · Map 6
The Hollow King
📍 Sunken Ruins · Map 6
Immune to physical damage while the Hollow Aura is active. Standard tower DPS does nothing in Phase 2. You need items that bypass armour or the fight never ends.
Hard Ghost Immunity Hollow Aura
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Boss 05 · Frostpeak · Map 7
The Iron Warden
📍 Frostpeak · Map 7
Maximum armour makes this fight a war of attrition. Siege engines deal AoE damage every 12s, and avalanche events wipe unprepared formations on the mountain path.
Hard Max Armour Siege Engine
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Boss 06 · Ashen Citadel · Map 8
The Final Witch
📍 Ashen Citadel · Map 8
Suppresses your items in Phase 3, turning your best gear off. Tower curse stacks across all four zones. The hardest fight in the game — and the key to Endless Mode unlock.
Extreme Item Suppression Tower Curse
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Quick Reference

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