Melee Offense with Hero Against Killers

Hero Levels in total: 10 Upgrading from 2 to 10 Upgrade cost level: 2 ×1.7 Gold: 88 060 000 000 Chaos Elements: 9 537 000 000 Level by level 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 8: 13 770 000 000 gold · 1 496 000 000 Chaos 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 0.5% · 1.25% · 1.25% · 1.5% · 2% · 2.5% · 3% · 3.5% · 4.5% · 5% Total at max: 25% Data: Viking Charts by Stars Night.