Overview
Shield Upgrade IV is part of the Academy battle branch. Each row below is one research level, including its cost, time, power and resulting effect.
Level costs
| Level | Bread | Wood | Stone | Iron | Gold |
|---|---|---|---|---|---|
| 1 | 930,000 | 930,000 | 180,000 | 46,000 | 12,000 |
| 2 | 1,100,000 | 1,100,000 | 220,000 | 55,000 | 14,000 |
| 3 | 1,300,000 | 1,300,000 | 260,000 | 65,000 | 16,000 |
| 4 | 1,600,000 | 1,600,000 | 330,000 | 83,000 | 21,000 |
| 5 | 3,400,000 | 3,400,000 | 680,000 | 170,000 | 44,000 |
Requirements and results
| Level | Prerequisites | Time | Power | Effect |
|---|---|---|---|---|
| 1 | Academy Lv. 22, Close Combat IV Lv. 1 | 16h 40m | 18,000 | 4% infantry health |
| 2 | Academy Lv. 23, Shield Upgrade IV Lv. 1 | 21h 40m | 18,000 | 4% infantry health |
| 3 | Academy Lv. 24, Shield Upgrade IV Lv. 2 | 1d 9h 20m | 18,000 | 4% infantry health |
| 4 | Academy Lv. 25, Shield Upgrade IV Lv. 3 | 2d 2h | 18,000 | 4% infantry health |
| 5 | Shield Upgrade IV Lv. 4 | 5d 5h | 29,250 | 6.5% infantry health |