Experienced warriors know that you should never let down your guard or underestimate your enemy. Your Hero is always ready to unsheathe their blade and stand up against even the most powerful enemy army! Upgrading this Knowledge increases the defense of troops led by the Hero.
| Level | Food | Lumber | Iron | Stone | Silver | Gold | Manuscript | Time | Requirements | Troop Defense with Hero | Influence | Hero’s Experience |
| 1 | 4.5M | 4.5M | 4.5M | 4.5M | 4.5M | 160K | 100 | 8w 2d 00h 00m 00s | 0 | 300K | 130K | |
| 2 | 8.4M | 8.4M | 8.4M | 8.4M | 10.5M | 230K | 160 | 13w 1d 00h 00m 00s | Oracle 18 | 1 | 680K | 165K |
| 3 | 16M | 16M | 16M | 16M | 23M | 340K | 255 | 21w 00h 00m 00s | Oracle 19 | 2 | 1.55M | 205K |
| 4 | 29M | 29M | 29M | 29M | 52M | 495K | 405 | 33w 2d 00h 00m 00s | Oracle 19 | 3 | 3.5M | 250K |
| 5 | 54M | 54M | 54M | 54M | 120M | 725K | 640 | 52w 6d 00h 00m 00s> 1 Year(s) | 5 | 7.8M | 305K | |
| 6 | 105M | 105M | 105M | 105M | 265M | 1.1M | 1 050 | 84w 00h 00m 00s> 1 Year(s) | Oracle 20 | 7 | 18M | 365K |
| 7 | 190M | 190M | 190M | 190M | 600M | 1.6M | 1 650 | 133w 4d 00h 00m 00s> 2 Year(s) | Oracle 21 | 10 | 40M | 440K |
| 8 | 350M | 350M | 350M | 350M | 1.35B | 2.4M | 2 600 | 212w 1d 00h 00m 00s> 4 Year(s) | 14 | 90M | 525K | |
| 9 | 645M | 645M | 645M | 645M | 3.05B | 3.6M | 4 100 | 337w 2d 00h 00m 00s> 6 Year(s) | 19 | 205M | 630K | |
| 10 | 1.2B | 1.2B | 1.2B | 1.2B | 6.9B | 5.45M | 6 500 | 536w 1d 00h 00m 00s> 10 Year(s) | 25 | 460M | 745K | |
| 2.6B | 2.6B | 2.6B | 2.6B | 12.38B | 16.1M | 17.46K | 1 431w 5d 00h 00m 00s> 27 Year(s) | 25 | 826.83M | 3.76M |
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