It's easy to repel a single attack, but it’s almost impossible to defend against blows coming from all sides. Train your Hero in powerful attack combinations and they will inflict even greater damage on enemies! Upgrading this Knowledge increases the number of attacks in a series, which determines the bonus.
| Level | Food | Lumber | Iron | Stone | Silver | Gold | Time | Requirements | Increased Number of Attacks in a Series | Influence | Hero’s Experience |
| 1 | 5K | 0 | 3.25K | 3.25K | 6K | 665 | 01h 30m 00s | 1 | 300 | 42K | |
| 2 | 12.5K | 0 | 8.15K | 8.15K | 14K | 1.15K | 07h 30m 00s | 2 | 690 | 47.5K | |
| 3 | 31.5K | 0 | 20.5K | 20.5K | 32K | 2.35K | 21h 00m 00s | 3 | 1.6K | 53.5K | |
| 4 | 78.5K | 0 | 51K | 51K | 73.5K | 4.55K | 2d 00h 00m 00s | 4 | 3.7K | 60K | |
| 5 | 200K | 0 | 130K | 130K | 170K | 10.5K | 5d 00h 00m 00s | 5 | 8.4K | 67K | |
| 6 | 490K | 0 | 320K | 320K | 390K | 24K | 1w 6d 00h 00m 00s | 6 | 19.5K | 75.5K | |
| 7 | 1.25M | 0 | 795K | 795K | 890K | 53.5K | 4w 3d 00h 00m 00s | 7 | 44.5K | 85K | |
| 8 | 3.1M | 0 | 2M | 2M | 2.05M | 125K | 11w 00h 00m 00s | 8 | 105K | 95.5K | |
| 9 | 7.65M | 0 | 5M | 5M | 4.7M | 295K | 27w 2d 00h 00m 00s | 9 | 235K | 110K | |
| 10 | 19.5M | 0 | 12.5M | 12.5M | 11M | 690K | 68w 1d 00h 00m 00s> 1 Year(s) | 10 | 545K | 120K | |
| 32.32M | 20.83M | 20.83M | 19.33M | 1.21M | 113w 6d 06h 00m 00s> 2 Year(s) | 10 | 963.69K | 756K |
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