Dwarves can be successfully countered by Orcs (huge growth, rage, which many also consider to be a cheat). If you accept your approach (450 creatures of level 2), then imagine the power of the "orcish rage" spell, how many goblins do you think the Orcs will have?

Brand will fix everything against the Orcs, considering that at a high level he will have infinite rune magic, so those resources are practically not needed... I played one battle for fun for about 40 minutes... in short, I used rune magic about 35-40 times, and only 5 resources were spent in total :D
And blocking Orc infantry units is not a problem, especially since the Dwarves have everything for this.

Dwarves can be destroyed by the High Elves if you take the hero Wingael.

Hmm... here again is a controversial question, but what if the Dwarven leader manages to equip his army with a lot of initiative, and then what?

Dwarves can be destroyed by mages if all creatures have tier 3 miniatures (and they will, because we will play until there are 450 spear masters), the mages will cast the "mage's sign" spell and will place double stacks of mines and walls and simply shoot down the Dwarves with miniatures for initiative and luck.
Dwarves are simply killed by Dark Elves with relentless rushing. This happens on any map, because the Dark Elves simply destroy neutral creatures very quickly. At the highest difficulty, their city development is not much different from the veteran level, everything is very simple, but how are you going to find a huge number of crystals? You might not be lucky with the mine.

Let's assume that the Dwarven hero has increased magic resistance and Dwarven luck + elemental urns, etc. Although, the advantage of the Dwarves is that the start is fast, but considering the meager growth, alas, there is little point in their army :(

I have already tested the retraining option a long time ago, my friends don't let me play as Humans on a large map, rather, training monks into knights with Isabelle is a cheat, I advise you to try it at least once before arguing, because I am 95% sure of the victory of Humans.

:smile12: that's for sure, it's actually the best solution, in fact, the most unpleasant unit against Dwarves, with its damn tournament attack :smile41: + and there are many angels + seraphs, all this will greatly strengthen the Humans faction, and there is no point in relying on the others, for example, the same griffins are not very effective against Dwarves.

Dwarves can be destroyed by Demons with the hero Nimue, if you are lucky with the amulet of mastery, there can be 6 units of cave lords on the battlefield.

The Cave Dweller is a very unpleasant creature, specifically for groups of Dwarven creatures of levels 1-2. The damage, I'm sure, will please everyone, and with it, the effectiveness.

P.S.
Once I mastered playing as Dwarves, I wondered, after level 25-30, how to fight a good Dwarven opponent who also has a large army?!