Troop Defense with Hero During an Attack I
Hero
Levels in total: 10
Upgrading from 3 to 8
Upgrade cost level: 3 ×2.4
Gold: 63 240 000 000
Chaos Elements: 6 840 000 000
Level by level
4: 6 960 000 000 gold · 744 000 000 Chaos
5: 9 360 000 000 gold · 1 008 000 000 Chaos
6: 12 120 000 000 gold · 1 308 000 000 Chaos
7: 15 360 000 000 gold · 1 668 000 000 Chaos
8: 19 440 000 000 gold · 2 112 000 000 Chaos
The price depends on the order in which you study a branch: the first costs the base price, the seventh is four times as much.
Bonus by level
2% · 5.5% · 6.5% · 8% · 10% · 12.5% · 15% · 18% · 22% · 25.5%
Total at max: 125%
Data: Viking Charts by Stars Night.