6.1.5 Crossbones
The 6.1.5 boss needs a nerd it is near to impossible to do this without spending your wallet, the crossbones has 300000+ health and does poison, does damage to hero's and the arc overload dosent make anything easier either plus the 90% chance to purify any debuff just makes it hell he needs a buff or a way people don't have to spend over 500+ units just to kill him