The more attacks that siege troops can endure, the more damage these deadly machines will inflict on the enemy. In the Valkyries' Citadel, you can increase your Hel's Harbinger health.
| Level | Food | Iron | Stone | Silver | Gold | Time | Requirements | Increased Hel's Harbinger Health | Influence | Hero’s Experience | Shaman's Experience |
| 1 | 18.5M | 15.5M | 12.5M | 31M | 62K | 06h 00m 00s | 1% | 100K | 260K | 260K | |
| 2 | 19M | 16M | 13M | 32M | 99.5K | 18h 00m 00s | Valkyries' Citadel 27 | 15% | 5.35M | 315K | 315K |
| 3 | 20.5M | 17.5M | 14M | 34.5M | 140K | 2d 00h 00m 00s | Valkyries' Citadel 27 | 30% | 11M | 375K | 375K |
| 4 | 25.5M | 21.5M | 17M | 42.5M | 190K | 6d 00h 00m 00s | 47% | 18.5M | 450K | 450K | |
| 5 | 38.5M | 32M | 25.5M | 63.5M | 265K | 2w 2d 00h 00m 00s | Valkyries' Citadel 28 | 67.5% | 28.5M | 555K | 555K |
| 6 | 64.5M | 53.5M | 43M | 110M | 380K | 5w 1d 00h 00m 00s | Valkyries' Citadel 29 | 91.5% | 44M | 720K | 720K |
| 7 | 115M | 92.5M | 74M | 185M | 555K | 10w 3d 00h 00m 00s | Valkyries' Citadel 29 | 120% | 68.5M | 975K | 975K |
| 8 | 190M | 160M | 130M | 315M | 815K | 2w 5d 00h 00m 00s | 155% | 110M | 1.4M | 1.4M | |
| 9 | 310M | 255M | 205M | 510M | 1.2M | 32w 1d 00h 00m 00s | Valkyries' Citadel 30 | 200% | 160M | 1.95M | 1.95M |
| 10 | 480M | 400M | 320M | 795M | 1.75M | 51w 2d 00h 00m 00s | 250% | 235M | 2.7M | 2.7M | |
| 1.28B | 1.06B | 854M | 2.12B | 5.46M | 105w 2d 00h 00m 00s> 2 Year(s) | 250% | 680.95M | 9.7M | 9.7M |
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