Troop Health with Hero During Defense I
Hero
Levels in total: 10
Upgrading from 0 to 7
Upgrade cost level: 2 ×1.7
Gold: 36 388 500 000
Chaos Elements: 3 912 550 000
Level by level
1: 263 500 000 gold · 19 550 000 Chaos
2: 1 785 000 000 gold · 187 000 000 Chaos
3: 3 315 000 000 gold · 357 000 000 Chaos
4: 4 930 000 000 gold · 527 000 000 Chaos
5: 6 630 000 000 gold · 714 000 000 Chaos
6: 8 585 000 000 gold · 926 500 000 Chaos
7: 10 880 000 000 gold · 1 181 500 000 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.