If you cover their armor pieces with fire-resistant fabric, you can protect the Sun Marksmen from the heat of their guns being fired. Conduct this Study to increase your Sun Marksmen's defense.
| Level | Food | Lumber | Iron | Stone | Silver | Gold | Time | Requirements | Increased Sun Marksman Defense | Power | Hero's Experience |
| 1 | 60M | 60M | 10M | 60M | 72M | 290K | 9w 1d 00h 00m 00s | 1% | 470K | 205K | |
| 2 | 120M | 120M | 20M | 120M | 145M | 395K | 13w 5d 00h 00m 00s | 6% | 1.1M | 235K | |
| 3 | 240M | 240M | 39.5M | 240M | 285M | 545K | 20w 4d 00h 00m 00s | 12% | 2.4M | 265K | |
| 4 | 470M | 470M | 78M | 470M | 560M | 755K | 30w 6d 00h 00m 00s | 20% | 5.45M | 310K | |
| 5 | 925M | 925M | 155M | 925M | 1.15B | 1.05M | 46w 2d 00h 00m 00s | 28% | 12.5M | 360K | |
| 6 | 1.85B | 1.85B | 305M | 1.85B | 2.2B | 1.5M | 69w 3d 00h 00m 00s> 1 Year(s) | 40% | 28M | 425K | |
| 7 | 3.65B | 3.65B | 605M | 3.65B | 4.35B | 2.1M | 104w 1d 00h 00m 00s> 1 Year(s) | 54% | 62.5M | 505K | |
| 8 | 7.2B | 7.2B | 1.2B | 7.2B | 8.6B | 2.95M | 156w 2d 00h 00m 00s> 2 Year(s) | 72% | 145M | 600K | |
| 9 | 14.5B | 14.5B | 2.4B | 14.5B | 17.5B | 4.15M | 234w 3d 00h 00m 00s> 4 Year(s) | 93% | 320M | 715K | |
| 10 | 28.5B | 28.5B | 4.7B | 28.5B | 34B | 5.9M | 351w 4d 00h 00m 00s> 6 Year(s) | 120% | 720M | 855K | |
| 57.52B | 57.52B | 9.51B | 57.52B | 68.86B | 19.64M | 1 036w 3d 00h 00m 00s> 19 Year(s) | 120% | 1.3B | 4.48M |
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