Your scouts have managed to obtain information about the weak spots of the enemy melee troops. This will help your siege engines fight them more efficiently. Upgrading this Knowledge increases the offense of your siege engines against melee troops.
| Level | Gold | Soul Shard | Time | Requirements | Siege Offense Against Melee | Influence | Hero’s Experience |
| 1 | 150K | 29.5K | 58w 4d 00h 00m 00s> 1 Year(s) | Killer Offense During an Attack 1, Oracle 36 | 1% | 15.5K | 41K |
| 2 | 225K | 43.5K | 12w 3d 00h 00m 00s | Killer Offense During an Attack 2, Oracle 36 | 2% | 35K | 51K |
| 3 | 300K | 64.5K | 129w 1d 00h 00m 00s> 2 Year(s) | Killer Offense During an Attack 3, Oracle 37 | 3% | 79K | 64K |
| 4 | 380K | 95.5K | 191w 5d 00h 00m 00s> 3 Year(s) | Killer Offense During an Attack 4, Oracle 37 | 4% | 180K | 80K |
| 5 | 455K | 145K | 284w 4d 00h 00m 00s> 5 Year(s) | Killer Offense During an Attack 5, Oracle 38 | 5% | 405K | 99.5K |
| 6 | 535K | 210K | 422w 4d 00h 00m 00s> 8 Year(s) | Killer Offense During an Attack 6, Oracle 38 | 6% | 910K | 125K |
| 7 | 625K | 315K | 627w 4d 00h 00m 00s> 12 Year(s) | Killer Offense During an Attack 7, Oracle 39 | 8% | 2.05M | 155K |
| 8 | 755K | 465K | 931w 6d 00h 00m 00s> 17 Year(s) | Killer Offense During an Attack 8, Oracle 39 | 10% | 4.65M | 195K |
| 9 | 1M | 690K | 1 383w 6d 00h 00m 00s> 26 Year(s) | Killer Offense During an Attack 9, Oracle 40 | 13% | 10.5M | 235K |
| 10 | 1.55M | 1.05M | 2 054w 6d 00h 00m 00s> 39 Year(s) | Killer Offense During an Attack 10, Oracle 40 | 16% | 24M | 290K |
| 5.98M | 3.11M | 6 097w 1d 00h 00m 00s> 116 Year(s) | 16% | 42.82M | 1.34M |
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