Items
Citadel Heart
The field reference. Know what you’re working with.
Bonuses from your build can change these values.
bonuses & tradeoffs
+15% District defense
field use
Within 300 units of a repaired building: gain +0.8% Damage per point of District defense, up to 40%.
how to find it
Clear wave 21 or later at Difficulty 5 (Extinction) with 40% District defense or higher. Use build stats; temporary combat bonuses and conditional conversions do not count. Permanent unlock; find it in future shops and caches.
stacking
Up to 1 copies per expedition.