The warriors from the underworld remember the terrors of Helheim all too well. Once back in Midgard, they continue to help those alongside whom they fought in dungeons. Upgrading this Knowledge increases the defense of your tier VIII warriors during an attack.
| Level | Gold | Soul Shard | Time | Requirements | Tier VIII Warrior Defense During Attack | Influence | Hero’s Experience | ||||||||
| 1 | 115K | 22.5K | 44w 6d 00h 00m 00s | Troop Defense II 1, Oracle 36 | 1% | 15.5K | 41K | ||||||||
| 2 | 175K | 33.5K | 66w 4d 00h 00m 00s> 1 Year(s) | Troop Defense II 2, Oracle 36 | 4% | 35K | 51K | ||||||||
| 3 | 235K | 49.5K | 98w 5d 00h 00m 00s> 1 Year(s) | Troop Defense II 3, Oracle 37 | 8% | 79K | 64K | ||||||||
| 4 | 295K | 73.5K | 146w 4d 00h 00m 00s> 2 Year(s) | Troop Defense II 4, Oracle 37 | 12% | 180K | 80K | ||||||||
| 5 | 350K | 110K | 217w 5d 00h 00m 00s> 4 Year(s) | Troop Defense II 5, Oracle 38 | 16% | 405K | 99.5K | ||||||||
| 6 | 415K | 165K | 323w 1d 00h 00m 00s> 6 Year(s) | Troop Defense II 6, Oracle 38 | 21% | 910K | 125K | ||||||||
| 7 | 485K | 245K | 479w 6d 00h 00m 00s> 9 Year(s) | Troop Defense II 7, Oracle 39 | 27% | 2.05M | 155K | ||||||||
| 8 | 585K | 360K | 712w 4d 00h 00m 00s> 13 Year(s) | Troop Defense II 8, Oracle 39 | 33% | 4.65M | 195K | ||||||||
| 9 | 775K | 535K | 1 058w 2d 00h 00m 00s> 20 Year(s) | Troop Defense II 9, Oracle 40 | 41% | 10.5M | 235K | ||||||||
| 10 | 1.2M | 4.63M | 790K | 2.38M | 1 571w 3d 00h 00m 00s> 30 Year(s) | 4 719w 5d 00h 00m 00s> 90 Year(s) | Troop Defense II 10, Oracle 40 | 50% | 50% | 24M | 42.82M | 290K | 1.34M |
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