RTF is a global modification that replaces all towns in the game.

I understand that they are still based on the Golems from the 7th game? But of course, something new for the Dwarves is great!
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*I'm still thinking about what to replace the Bears and Bone Crushers with... Should I move the Tauns to Tier 3? or Tier 4, which would be more logical? 🤔

Yes, this is a golem from the 7th game. I plan to release two versions - a regular one and a large golem. The large golem is for the future, and the small one is for the current faction.
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Regarding your problem: Dwarves are a unique race; they are at the same level of warrior coolness as Orcs or Knights, so elite infantry is a natural fit.

Berserk is too specific of a unit; I would give him axes instead of brass knuckles and put him in Tier 2-3.

Tauns are very large; I wouldn't reduce their tier.