How this category works
Use the requirements and qualifications below together. Local earned milestones persist, and repeated receipts cannot count twice.
Master Builder

Build every available tower specialization.
Launch catalog: Rangers, Musketeers, Royal Guards, Berserkers, Storm Spire, Inferno, Frost, Siege Mortar and Organ Gun. Permanent upgrade ranks are a different system.
Recorded defeat evidence can also advance this condition; a victory is not required.
Rain of Arrows

Defeat 500 enemies with Archer towers.
Recorded defeat evidence can also advance this condition; a victory is not required.
Steel Wall

Defeat 250 enemies with Barracks units.
Recorded defeat evidence can also advance this condition; a victory is not required.
Arcane Master

Defeat 250 enemies with Mage towers.
Recorded defeat evidence can also advance this condition; a victory is not required.
Artillery Expert

Defeat 250 enemies with Cannon towers.
Recorded defeat evidence can also advance this condition; a victory is not required.
Thunderstruck

Defeat 100 flying enemies using Thunder Batteries.
Recorded defeat evidence can also advance this condition; a victory is not required.
The Big Boom

Defeat ten enemies in a single Mortar explosion.
Ten killing blows from the same Siege Mortar shell. Hits and separate explosions do not combine.
Recorded defeat evidence can also advance this condition; a victory is not required.
Specialist

Win using towers from only one family.
Verified challenge: Silverwood Outskirts with Archer towers only. Heroes may participate. Other combinations await balance verification.
About this entry & sources
Reviewed 21 October 2026. Drawn from the game’s authored catalog and implemented systems. Numbers are base development values; upgrades and encounter tuning may change them.
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