Unique battle techniques teach Vikings how to spend their strength wisely. This allows them to forget about fatigue even in the most exhausting battles. Upgrading this Knowledge increases your army's health during attacks against tier IV warriors.
| Level | Gold | Soul Shard | Time | Requirements | Increased Troop Health During Attack Against Tier IV | Influence | Hero’s Experience | ||||||||
| 1 | 570K | 10.5K | 48w 6d 00h 00m 00s | Oracle 31, Number of Warriors on a March 1 | 0,5% | 160K | 510K | ||||||||
| 2 | 710K | 15.5K | 72w 4d 00h 00m 00s> 1 Year(s) | Oracle 31, Number of Warriors on a March 1 | 1% | 355K | 780K | ||||||||
| 3 | 850K | 23K | 107w 5d 00h 00m 00s> 2 Year(s) | Oracle 32, Number of Warriors on a March 2 | 1,5% | 800K | 1.15M | ||||||||
| 4 | 990K | 34K | 159w 6d 00h 00m 00s> 3 Year(s) | Oracle 32, Number of Warriors on a March 3 | 2% | 1.85M | 1.55M | ||||||||
| 5 | 1.15M | 50K | 237w 3d 00h 00m 00s> 4 Year(s) | Oracle 33, Number of Warriors on a March 4 | 2,5% | 4.1M | 2.1M | ||||||||
| 6 | 1.3M | 74.5K | 352w 4d 00h 00m 00s> 6 Year(s) | Oracle 33, Number of Warriors on a March 4 | 3% | 9.2M | 2.7M | ||||||||
| 7 | 1.45M | 115K | 523w 4d 00h 00m 00s> 10 Year(s) | Oracle 34, Number of Warriors on a March 5 | 3,5% | 21M | 3.5M | ||||||||
| 8 | 1.7M | 165K | 777w 3d 00h 00m 00s> 14 Year(s) | Oracle 34, Number of Warriors on a March 6 | 4% | 47M | 4.45M | ||||||||
| 9 | 2.15M | 245K | 1 154w 2d 00h 00m 00s> 22 Year(s) | Oracle 35, Number of Warriors on a March 7 | 4,5% | 110M | 5.6M | ||||||||
| 10 | 3.1M | 13.97M | 365K | 1.1M | 1 714w 1d 00h 00m 00s> 32 Year(s) | 5 148w 3d 00h 00m 00s> 98 Year(s) | Oracle 35, Number of Warriors on a March 10 | 5% | 45% | 240M | 434.47M | 7M | 29.34M |
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