[ANNOUNCEMENT] Heroes 3: World Tournament - an add-on for tournament games.

Question about Barbarian: Is Tyrax the best hero?

Yes.

Or is Kregg still strong?

He's still strong, but Tyrax is much stronger.

In general, what are the nuances when playing as Barbarian with a random hero?

There aren't really any. You still upgrade the wolves to level 111 and go fight. Just fewer wolves, and more goblins and orcs. And you need to quickly get the birds, it's difficult with just wolves.

This is for the case if it's not Grechkin or Zhabar. For the first, you upgrade the goblins to level 111, they are the main attacking force. For Zhabar, you don't upgrade anything, orcs 111, Rukh 112 (sometimes the other way around).