Troop Defense with Hero During Defense I
Hero
Levels in total: 10
Upgrading from 2 to 6
Upgrade cost level: 3 ×2.4
Gold: 33 120 000 000
Chaos Elements: 3 564 000 000
Level by level
3: 4 680 000 000 gold · 504 000 000 Chaos
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
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.