Troop Defense with Hero During an Attack I
Hero
Levels in total: 10
Upgrading from 2 to 6
Upgrade cost level: 7 ×4
Gold: 55 200 000 000
Chaos Elements: 5 940 000 000
Level by level
3: 7 800 000 000 gold · 840 000 000 Chaos
4: 11 600 000 000 gold · 1 240 000 000 Chaos
5: 15 600 000 000 gold · 1 680 000 000 Chaos
6: 20 200 000 000 gold · 2 180 000 000 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.