Gameplay tactics on the S map.

For the Barbarian, the main goal is to survive until they reach higher levels.
And then – unleash the storm.

I don't really understand the point of the second-level unupgraded unit – it's basically the same as the Centaur Captains, but more expensive.
Goblins are valuable because they often appear near their resource locations, and you can gather a stack of over a hundred units, which is quite significant.