Let your Hero learn how to identify the weak spots in your enemy's armor and hit the most vulnerable body parts! Upgrading this Knowledge increases the possibility that your Hero will land a critical blow on the enemy.
| Level | Food | Lumber | Iron | Stone | Silver | Gold | Time | Requirements | Increased Critical Hit Chance | Influence | Hero’s Experience |
| 1 | 3K | 0 | 1.5K | 1.5K | 3.75K | 340 | 00h 30m 00s | 1 | 190 | 3.2K | |
| 2 | 7.65K | 0 | 3.85K | 3.85K | 8.65K | 540 | 02h 30m 00s | Oracle 2 | 1 | 435 | 4.8K |
| 3 | 19.5K | 0 | 9.65K | 9.65K | 20K | 920 | 06h 30m 00s | Oracle 4 | 2 | 995 | 7.2K |
| 4 | 49K | 0 | 24.5K | 24.5K | 46K | 1.9K | 18h 00m 00s | Oracle 6 | 4 | 2.3K | 11K |
| 5 | 125K | 0 | 62K | 62K | 105K | 3.75K | 1d 18h 00m 00s | Oracle 8 | 6 | 5.25K | 16.5K |
| 6 | 315K | 0 | 160K | 160K | 245K | 7.8K | 4d 03h 00m 00s | Oracle 11 | 8 | 12.5K | 24K |
| 7 | 800K | 0 | 400K | 400K | 560K | 19.5K | 1w 4d 00h 00m 00s | Oracle 13 | 12 | 28K | 36K |
| 8 | 2.05M | 0 | 1.05M | 1.05M | 1.3M | 42.5K | 3w 5d 00h 00m 00s | Oracle 16 | 16 | 64K | 54K |
| 9 | 5.15M | 0 | 2.6M | 2.6M | 2.95M | 98K | 9w 1d 00h 00m 00s | Oracle 19 | 21 | 150K | 80.5K |
| 10 | 13M | 0 | 6.5M | 6.5M | 6.8M | 230K | 22w 5d 00h 00m 00s | Oracle 21 | 28 | 340K | 120K |
| 21.52M | 10.81M | 10.81M | 12.04M | 405.25K | 38w 1d 00h 30m 00s | 27,50 | 603.67K | 357.2K |
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