Vikings are fated to endure relentless tests of their courage and might. The braver and fiercer warriors are in battle, the higher their chances are of survival and victory. In the Valkyries' Citadel, you can increase your Cutthroat defense.
| Level | Lumber | Iron | Stone | Silver | Gold | Time | Requirements | Increased Cutthroat Defense | Influence | Hero’s Experience | Shaman's Experience |
| 1 | 12M | 9.4M | 14.5M | 23.5M | 45.5K | 05h 00m 00s | 1% | 50K | 130K | 130K | |
| 2 | 12.5M | 9.7M | 15M | 24.5M | 73K | 11h 00m 00s | Valkyries' Citadel 23 | 13.5% | 2.7M | 160K | 160K |
| 3 | 13.5M | 10.5M | 16M | 26.5M | 105K | 1d 03h 00m 00s | Valkyries' Citadel 24 | 26.5% | 5.5M | 190K | 190K |
| 4 | 16.5M | 13.5M | 20M | 33M | 140K | 3d 03h 00m 00s | 41.5% | 9.05M | 225K | 225K | |
| 5 | 24.5M | 19.5M | 29.5M | 49M | 195K | 1w 2d 00h 00m 00s | Valkyries' Citadel 26 | 59.5% | 14.5M | 280K | 280K |
| 6 | 41M | 33M | 49.5M | 82M | 280K | 2w 5d 00h 00m 00s | Valkyries' Citadel 27 | 80.5% | 22M | 360K | 360K |
| 7 | 71M | 57M | 85.5M | 145M | 405K | 5w 3d 00h 00m 00s | Valkyries' Citadel 28 | 105% | 34.5M | 490K | 490K |
| 8 | 120M | 96M | 145M | 240M | 600K | 1w 3d 00h 00m 00s | 140% | 53M | 680K | 680K | |
| 9 | 200M | 160M | 235M | 395M | 880K | 16w 5d 00h 00m 00s | Valkyries' Citadel 30 | 175% | 79.5M | 960K | 960K |
| 10 | 305M | 245M | 365M | 610M | 1.3M | 26w 5d 00h 00m 00s | 220% | 120M | 1.35M | 1.35M | |
| 816M | 653.6M | 975M | 1.63B | 4.02M | 54w 6d 22h 00m 00s> 1 Year(s) | 220% | 340.8M | 4.83M | 4.83M |
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