Upgrade Defense is a hero action that allows players to spend mana to upgrade a nearby defense, increasing its stats and fully repairing it. The action's default hotkey is [5] on PC.
Costs[]
A single defense can be upgraded up to five times, with every level requiring more mana and a longer casting period to complete. In order to fully upgrade a tower, the active hero must be at least level 60.
| Upgrade Level | Mana Cost | Required Hero Level |
|---|---|---|
|
100 | 4 |
|
200 | 9 |
|
400 | 19 |
|
700 | 34 |
|
1220 | 60 |
Target Priority[]
On PC, the player's cursor will be automatically placed over an upgradable defense in range when this ability is activated. If there is more than one valid target, the least upgraded and closest defense is prioritized. Additionally, Tower Buff Beams are prioritized over all other defenses. In Vanilla, this priority can be adjusted through a config file inside the game's folders.
Other Methods[]
- The Adept has an Upgrade Aura
/Instant Upgrade ability that lets her upgrade defenses instantly, for a higher mana cost. This upcharge depends on her Ability 1 stat. - The Jester's Wheel O' Fortuna has two combinations that either upgrade (or downgrade) the closest applicable defense.
- Friendly Djinn in the challenges War of the Djinn and Rumble in the Jungle occasionally upgrade on their own.
- The Upgrader Djinnlet automatically spends the hero's mana to upgrade nearby defenses for a 50% upcharge.
In Other Dungeon Defenders Games[]
Awakened has a more sophisticated upgrade priority system by default than DD1 on PC.
- Upgrading a hero defense increases its damage by 10% per level and its health, lifespan or detonation count by 20%. A fully upgraded defense will have +50% damage and +100% health/lifespan/detonation count.
- In Redux, any defense not a Lightning or Deadly Striker Tower instead gains +20% damage per upgrade, for a total of +100% if maxed out.
- On the other hand, upgrading a defense treats as if the builder's Range and Defense Rate stats were higher. A level 1 turret receives a +2 bonus, while a level 5 turret gets +36.
| Hero Stats | Tower Stats | Action Wheel | Hero Menu |
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