In Midgard, nobody has ever found materials like those that were used to craft Helhests' plate armor. Sturdy as stone and light as leather, it prevents cavalry units from being struck by foes. Upgrading this Knowledge increases your Helhests' defense.
| Level | Gold | Soul Shard | Time | Requirements | Helhest Defense | Influence | Hero’s Experience |
| 1 | 125K | 24.5K | 52w 6d 00h 00m 00s> 1 Year(s) | Helhest offense 1, Oracle 36 | 1% | 19K | 44.5K |
| 2 | 190K | 36.5K | 78w 3d 00h 00m 00s> 1 Year(s) | Helhest offense 2, Oracle 36 | 7% | 42K | 56.5K |
| 3 | 255K | 54.5K | 116w 3d 00h 00m 00s> 2 Year(s) | Helhest offense 3, Oracle 37 | 13% | 95K | 72K |
| 4 | 315K | 80.5K | 172w 6d 00h 00m 00s> 3 Year(s) | Helhest offense 4, Oracle 37 | 20% | 215K | 91.5K |
| 5 | 380K | 120K | 256w 5d 00h 00m 00s> 4 Year(s) | Helhest offense 5, Oracle 38 | 30% | 485K | 120K |
| 6 | 445K | 180K | 381w 1d 00h 00m 00s> 7 Year(s) | Helhest offense 6, Oracle 38 | 41% | 1.1M | 145K |
| 7 | 515K | 265K | 80w 6d 00h 00m 00s> 1 Year(s) | Helhest offense 7, Oracle 39 | 56% | 2.5M | 185K |
| 8 | 625K | 395K | 840w 3d 00h 00m 00s> 16 Year(s) | Helhest offense 8, Oracle 39 | 75% | 5.6M | 225K |
| 9 | 820K | 580K | 178w 2d 00h 00m 00s> 3 Year(s) | Helhest offense 9, Oracle 40 | 97% | 13M | 280K |
| 10 | 1.25M | 865K | 1 853w 2d 00h 00m 00s> 35 Year(s) | Helhest offense 10, Oracle 40 | 130% | 28.5M | 345K |
| 4.92M | 2.6M | 4 011w 2d 00h 00m 00s> 76 Year(s) | 130% | 51.56M | 1.56M |
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