Alchemists have created a reagent, Magnum calcisinum, that will make metal more durable if it is hardened one more time. Armor forged from this will be heavier than usual, and so only knights should be equipped with it. This upgrade will increase your Militissae's defense.
| Level | Lumber | Iron | Stone | Silver | Gold | Time | Requirements | Alchemists have created a reagent, Magnum calcisinum, that will make metal more durable if it is hardened one more time. Armor forged from this will be heavier than usual, and so only knights should be equipped with it. This upgrade will increase your Militissae's defense. | Power | Hero's Experience |
| 1 | 470K | 375K | 565K | 940K | 2.8K | 00h 15m 00s | Alchemical Laboratory 1 | 1% | 250 | 7.5K |
| 2 | 505K | 405K | 605K | 1.05M | 4.55K | 00h 35m 00s | Alchemical Laboratory 2 | 5.5% | 13.5K | 21K |
| 3 | 595K | 475K | 710K | 1.2M | 6.35K | 01h 30m 00s | Alchemical Laboratory 3 | 10% | 27.5K | 35.5K |
| 4 | 880K | 705K | 1.1M | 1.8M | 8.65K | 05h 00m 00s | Alchemical Laboratory 5 | 15.5% | 45.5K | 54K |
| 5 | 1.65M | 1.3M | 1.95M | 3.25M | 12K | 13h 00m 00s | Alchemical Laboratory 6 | 22% | 71K | 80K |
| 6 | 3.15M | 2.5M | 3.75M | 6.25M | 17.5K | 1d 06h 00m 00s | Alchemical Laboratory 7 | 29.5% | 110K | 125K |
| 7 | 5.85M | 4.65M | 7M | 12M | 25.5K | 2d 09h 00m 00s | Alchemical Laboratory 8 | 39% | 175K | 185K |
| 8 | 10.5M | 8.2M | 12.5M | 20.5M | 37K | 4d 09h 00m 00s | Alchemical Laboratory 10 | 50.5% | 265K | 280K |
| 9 | 17.5M | 14M | 20.5M | 34.5M | 54.5K | 1w 1d 00h 00m 00s | Alchemical Laboratory 11 | 64% | 400K | 420K |
| 10 | 27M | 22M | 32.5M | 54M | 79K | 1w 5d 00h 00m 00s | Alchemical Laboratory 12 | 80% | 590K | 610K |
| 68.1M | 54.61M | 81.18M | 135.49M | 247.85K | 4w 20h 20m 00s | 80% | 1.7M | 1.82M |
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