FroskaHe asked and answered himself ;)
I know how to play, and, believe me, I'm pretty good at it. I play on Hotseat with friends.
Of course, the Hive gains strength in the late game if the map isn't for 2-3 weeks...
You're trying to talk about something you don't know, which is very impolite of you. I would call it something, but you understand it yourself ;)
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I think I wasn't the first to mention machines. And making such conclusions that I don't know what I'm talking about is very hasty and impolite, especially on your part, because I clearly stated that I play in the late game. If you consider yourself an experienced player, then tell me how to win in the late game against Haven, and then I'll understand that I was wrong.:)

I'm telling you: it's impolite to talk about me (

It seems you just picked up random information on forums and now you're trying to present it in a disorganized way. First, learn how to play, and then try to act smart about perks and skills.

), when you don't even know me.
I only level up machines in the late game, unless the Mentor is nearby ;)
You wrote it yourself, but you don't understand it...
Secondly, if we're playing against a strong Haven player, our chances are only based on his mistakes, shortcomings, or some tricks, etc. With good play from the Humans, the Hive has no chance. Of course, if the heroes are random, then something is still possible.
Then, it depends on which hero we're playing and against whom. And I see how the opponent levels up his hero, because I play on Hotseat.

I try to find the Necropolis set of 2 items as much as possible (the Staff of the Underworld and the Cloak are very good). I try to get boots for our heroes = +1 to speed. And prevent Paladins or Isabel from wiping out half the army at the beginning. It's also desirable to level up the Hive: Berserk, Subjugation, Vampirism, Mass Slow, etc.
It's very desirable that the Imps level up as much mana as possible, but it doesn't always work out. Sometimes it's possible to level up Keen Mind, so that, depending on the situation, you can cast one or another Hive spell. Logistics is important in long games. If we have the first turn, and we often do, we cast Mass Slow and go forward. If the opponent has Anti-Magic and the subjugated unit doesn't have time to move before it's "healed";). Since we have boots and tactics, this won't cause any particular problems, and Haven itself doesn't mind standing on the front line. We block the Paladins so that they don't have the opportunity to scatter. We try to hit the enemy with Fire Elementals where there are ranged units. Not directly, of course, but through Breath Attack. We can summon reinforcements with Imps. We subjugate the nearest enemy unit with Succubi, or shoot at the enemy. But it all depends on the situation. Since I see how the opponent plays, I choose what to level up based on the game ;)
Later on, Defense and Wisdom can also be beneficial. We'll try to get Luck and Morale through artifacts.
The most important thing is not to drag out the game too much. The longer we wait, the higher the probability that we will lose.
Therefore, the tactic is not universal and depends on the situation