Defending a Fortress is a matter of honor for Heroes. In the name of their Jarl, they will do everything they can to thwart enemy attempts to capture the location. Upgrading this Knowledge increases your troops' defense when guarding Fortresses.
| Level | Gold | Soul Shard | Time | Requirements | Troop Defense When Guarding Fortresses | Influence | Hero’s Experience | ||||||||
| 1 | 140K | 28K | 54w 6d 00h 00m 00s> 1 Year(s) | Troop Defense When Capturing Fortresses II 1, Oracle 36 | 1% | 24K | 60.5K | ||||||||
| 2 | 215K | 41K | 81w 2d 00h 00m 00s> 1 Year(s) | Troop Defense When Capturing Fortresses II 2, Oracle 36 | 6% | 54K | 76.5K | ||||||||
| 3 | 285K | 61K | 120w 5d 00h 00m 00s> 2 Year(s) | Troop Defense When Capturing Fortresses II 3, Oracle 37 | 11% | 125K | 96K | ||||||||
| 4 | 360K | 90.5K | 179w 2d 00h 00m 00s> 3 Year(s) | Troop Defense When Capturing Fortresses II 4, Oracle 37 | 18% | 275K | 125K | ||||||||
| 5 | 430K | 135K | 266w 1d 00h 00m 00s> 5 Year(s) | Troop Defense When Capturing Fortresses II 5, Oracle 37 | 26% | 620K | 155K | ||||||||
| 6 | 505K | 200K | 395w 2d 00h 00m 00s> 7 Year(s) | Troop Defense When Capturing Fortresses II 6, Oracle 38 | 37% | 1.4M | 190K | ||||||||
| 7 | 595K | 300K | 83w 6d 00h 00m 00s> 1 Year(s) | Troop Defense When Capturing Fortresses II 7, Oracle 38 | 49% | 3.15M | 240K | ||||||||
| 8 | 715K | 440K | 871w 4d 00h 00m 00s> 16 Year(s) | Troop Defense When Capturing Fortresses II 8, Oracle 38 | 63% | 7.1M | 295K | ||||||||
| 9 | 950K | 655K | 1 294w 2d 00h 00m 00s> 24 Year(s) | Troop Defense When Capturing Fortresses II 9, Oracle 39 | 80% | 16.5M | 365K | ||||||||
| 10 | 1.45M | 5.65M | 970K | 2.92M | 274w 4d 00h 00m 00s> 5 Year(s) | 3 621w 6d 00h 00m 00s> 69 Year(s) | Troop Defense When Capturing Fortresses II 10, Oracle 39 | 100% | 100% | 36.5M | 65.75M | 445K | 2.05M |
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