Shield Upgrade IV
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AQuick answer
Shield Upgrade IV has 5 Academy levels. The table below is the per-level resource and time cost, plus the listed power and buff increment at each rank.
Per-level costs
| Level | Food | Wood | Stone | Iron | Gold | Time |
|---|---|---|---|---|---|---|
| 1 | 930,000 | 930,000 | 180,000 | 46,000 | 12,000 | 16h 40m |
| 2 | 1,100,000 | 1,100,000 | 220,000 | 55,000 | 14,000 | 21h 40m |
| 3 | 1,300,000 | 1,300,000 | 260,000 | 65,000 | 16,000 | 1d 9h 20m |
| 4 | 1,600,000 | 1,600,000 | 330,000 | 83,000 | 21,000 | 2d 2h |
| 5 | 3,400,000 | 3,400,000 | 680,000 | 170,000 | 44,000 | 5d 5h |
Buff and prerequisites
| Level | Buff | Power | Prerequisites |
|---|---|---|---|
| 1 | +4% | 18,000 | Academy Lv. 22 Close Combat Iv Lv. 1 |
| 2 | +4% | 18,000 | Academy Lv. 23 Shield Upgrade Iv Lv. 1 |
| 3 | +4% | 18,000 | Academy Lv. 24 Shield Upgrade Iv Lv. 2 |
| 4 | +4% | 18,000 | Academy Lv. 25 Shield Upgrade Iv Lv. 3 |
| 5 | +6.5% | 29,300 | Shield Upgrade Iv Lv. 4 |
Names and costs are in-game labels. We do not copy third-party writeups of what the tech is "for."