Ina, the cheating heroine. Auto-translated

almost a hundred level 1 units, upgrade them to level 2 on the second day – they’ll hold their ground. And you’ll have faster leveling than your opponent.

Hmm... It seems you're fighting against the AI as a Warrior... you probably won't outrun Orcs, Dark Elves (if you play with invisibility), or Machinists controlled by a human player, even with a hundred Warriors.

Gentlemen and ladies! What do you think would happen if you pitted a highly leveled Dwarf against an equally highly leveled, hyperactive Sorceress from the Academy? Let her gain power in offensive spells, try not to forget about luck (Lucky Charm spell), and maximize defense, and focus on mana – more mana and less spent in battle. Try to keep the troops on defense (with Readiness), and let the Sorceress, who moves CONSTANTLY, also CONSTANTLY bombard the bearded tough guys with offensive spells or something else... all of this combined with obsidian golems, of course, carefully directing them towards the enemy so that these guys can be healed as needed.
In my opinion, the Sorceress is one of the strongest units. What do you think?

Sandro's Cloak and Subjugation work wonders!