Please offer some advice.

AndersonAD
The gameplay system is great, but it's not interesting to play without these "cunning" actions, like attacking from the shadows. Believe me. It's like walking the night streets. Moreover, you need to prevent the enemy from leveling up their hero to become a RAMBO. You need to make time your ally.

Well, this is certainly interesting... but not in this case. I explained how I play with my brother... I play differently with each person, sometimes attacking immediately and sometimes later.
Imagine you have plenty of time, you want to relax, have a drink, and chat. Your opponent (enemy) plays the same way as you (the skill level is the same). And you just want to develop your hero very strongly to sweep away everyone in your path or learn new tricks by developing something using a different scheme.
Sometimes I attack when playing with other people after three weeks... (This method also has a cool feature... in general, I try not to repeat myself and be unpredictable).
That's how it is...

I agree with "OptiMAL". A Chaos hero with a couple of dragons will clear half of my territory for crystals and artifacts, and I just sit and watch how he levels up. And I don't go to the final battle without an army. I think few people can withstand a well-developed Chaos hero. My challenge against his reaction of a cat and an attack on the fourth creatures (I don't remember what it's called) – I don't even have time to issue the challenge, let alone reach him.

But you shouldn't be afraid to go to the final battle... firstly, this is the most extreme experience of the whole game, and secondly, even if he is a Chaos hero, Order, or whatever, he can be killed, but you need to think a little about how to do it, read what is needed for what, and, as they say, create an "Anti A" for his "A"... For example, if he plays as a mage, he won't do anything bad to you ===This is true, and you can find the same weakness in the others and strike at it. Well, in short, you need to experiment and try... SO GO FOR IT!!!