In general, before balancing the Barbarian, you need to learn how to play it... And again, it's quite good on PlayStation.

I'm willing to argue, comrade Tsar. The Barbarian finds its use in a game only when you find a book in the first week.

For example, life on Iron was only improved after many, many games focused on life.

The Barbarian is indeed good on Iron. Unlike other castles, it has a 100% chance of defeating the guards on the bridge within the first 14 days. But you still need to know how to use the first castle for magic. And what if you're playing against Chaos? Now there are few dinosaurs like you, Oxygen. And since you yourself talk about the need to learn how to play as the Barbarian, why not improve the Barbarian so that it can be used.
By the way, regarding Iron, I suggest making the infamous guard of the second bridge permanent, like the Naga on the first gold mine, dragons on the gloves, and on the second gold mine. And break the chains on day 141.