升级路线规划器
流传的攻略都是静态表格。这个工具会逐级推演：说明你现在的位置和目标，它就算出你真正需要升的每一座建筑，并且去重，需要两次的建筑只按最高等级列一次。
Headquarters 1 → 6 needs 3 buildings
Other conditions
- 1st Formation
逐级明细
| To unlock | Conditions |
|---|---|
| Headquarters 2 | Drill Ground 1 + 1st Formation |
| Headquarters 3 | City Gate 2 |
| Headquarters 4 | Barracks 3 + Drill Ground 3 |
| Headquarters 5 | City Gate 4 + Barracks 4 |
| Headquarters 6 | City Gate 5 + Drill Ground 5 |