Troop Defense with Hero During Defense I
Hero
Levels in total: 10
Upgrading from 8 to 10
Upgrade cost level: 2 ×1.7
Gold: 39 950 000 000
Chaos Elements: 4 335 000 000
Level by level
9: 17 850 000 000 gold · 1 955 000 000 Chaos
10: 22 100 000 000 gold · 2 380 000 000 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
1% · 3.5% · 3.75% · 5% · 6% · 7.25% · 9% · 11% · 13% · 15.5%
Total at max: 75%
Data: Viking Charts by Stars Night.