I challenge you!

I played on version 1.0, and the armies still accumulate very quickly. How do you defeat them? The enemy always has 150-200% more creatures than your hero, and the hero's stats and magic don't help; they overwhelm you with numbers... (Well, maybe I'm just bad at the game).

Well, I don't know, honestly, I can't reduce it any further. Maybe I can suggest you lower the game's difficulty ;) For the Warrior and Recruit, I increased the initial growth rate for the player against the AI.

I have a couple of suggestions for the map:
1) I suggest making it so that you can only hire heroes of the same race as the Castle in the tavern.

And I lost my main hero on the second week to the AI, he didn't even have time to escape. I hired a hero of a different race in the tavern, leveled him up, and it turned out to be a great combination, which I used to defeat the AI. It's an interesting strategy when you're not playing with your own army ;) It would be great if you could always have one of your own heroes and one of a different race in the tavern (maybe it's already possible, I haven't checked, but I doubt it), instead of just your own, because otherwise, we won't be able to re-hire a lost hero who didn't even have time to escape during a battle, and at a high level, which is not good. But, despite this, it's probably better to make them the same race. That's more logical, I haven't thought about it myself yet. Thanks for that.

2) I wanted to implement this somewhere, but it would fit better on your map: make it so that attacking a garrison involves the hero, i.e., the enemy hero attacks the garrison, and an arena is triggered with an army from the garrison + your main hero. That would be more interesting (much more interesting :) The hero's stats, magic, etc., would have a bonus, and the garrisons wouldn't be so weak, even if you reduce the number of creatures in them, because they become too numerous after a while.

And I was already thinking about doing that. But how many heroes can be involved in Multiplayer? The outposts are already good enough. The AI attacks with its hero, but several of its own units are lost/flee :D This would require leveling up each hero, and there might not be enough heroes. Unless it's in version 2.0, but 2.0 is already starting to resemble a remake.

Try the SM version. There's a boss in the outpost ;)