Warriors' equipment greatly affects the outcome of any battle. Skilled blacksmiths have crafted sturdy battle garb that will withstand hundreds of axe strikes and save Viking lives. Upgrading this Knowledge increases army defense in an Onslaught.
| Level | Scrolls | Precious Dust | Gold | Time | Requirements | Increased Army Defense in Onslaught | Influence | |
| 1 | 250 | 10 | 41.5K | 1w 12h 00m 00s | 1 | 13M | ||
| 2 | 340 | 15 | 55.5K | 1w 4d 00h 00m 00s | 2 | 13M | ||
| 3 | 470 | 20 | 73.5K | 2w 2d 00h 00m 00s | 3 | 13.5M | ||
| 4 | 660 | 25 | 105K | 3w 3d 12h 00m 00s | 4, | >5 | 13.5M | | |
| 5 | 945 | 40 | 155K | 5w 4d 12h 00m 00s | 6 | 13.5M | ||
| 6 | 1 400 | 70 | 250K | 9w 4d 12h 00m 00s | 7, | >5 | 13.5M | | |
| 7 | 2 100 | 120 | 420K | 17w 2d 12h 00m 00s | 10 | 14M | ||
| 8 | 3 200 | 220 | 745K | 32w 6d 00h 00m 00s | 12, | >5 | 14M | | |
| 9 | 4 950 | 435 | 1.4M | 65w 3d 12h 00m 00s> 1 Year(s) | 15, | >5 | 14M | | |
| 10 | 7 850 | 890 | 2.8M | 137w 12h 00m 00s> 2 Year(s) | 20 | 14.5M | ||
| 22.17K | 1.85K | 6.05M | 276w 3d 12h 00m 00s> 5 Year(s) | 20 | 5 | 136.5M |
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