Tactics for playing as/against Barbarians.

Here's how it usually goes: almost all Barbarian heroes reach level 10 with expert logistics, making it not the most enjoyable experience to chase them. Sometimes, you even have to sit in a captured castle with dragons and buy a few archers for meat. When the beaver army is spread across different parts of the map, you can attack them one by one during the castle siege. And flying, say, 3 dragons into a crowd of lots of wolves, 10 ogres, and about a hundred goblins just to eliminate the archers can be very risky.
Usually, any decent enemy hero who manages to reach a poorly built castle of a player without the main army present is always a problem. Of course, if the main hero has the artifact Anduran, it's just extra experience.