Awakening of Evil

Maybe I'm not the best player, but still, on the 4th mission, playing as a Warrior, by the end of the 3rd week, I was almost done clearing the dungeon, when suddenly, quite literally, an Elf flew in with an army almost 5 times larger than mine and headed straight for me.

With logistics maxed out, this Elf was still flying almost a quarter of the distance faster than me, which ultimately led to my demise.

Maybe I'm really slow, but HOW do you build an army identical to a hundred Archers, Dancers, and fifty Druids by the 3rd week?! And this isn't just one Elf; a second one with a similar army is already approaching the entrance.

I'm far from a Heroes guru, and I specifically set the difficulty to Warrior just to enjoy the campaign and the story, but even with that difficulty, things aren't going too well.

At the beginning, everything was great; I reached the garrison and the city with almost no losses, but then Assassins wiped out two-thirds of the Furies. In the city, the enemy hero again used spells to destroy 70% of the remaining Furies.

I would be very grateful if someone could help me with advice on how to complete the map, perhaps with an optimal build or strategy.

As I wrote above, I decided to replay this campaign; I've now reached the 4th mission (the final cutscenes of the 2nd and 3rd missions are attached; I wrote about completing the 1st mission above).

In the 4th mission, I started in the following way: instead of developing Sigrif at the start, I began to level up Tralsai with his starting Plague spell – as a result:
1. In the initial battle with the Fairies, I lost only 3 Hunters, 5 Scouts, and one Minotaur (the 134 Fairies, poisoned at the beginning of the battle, managed to cast "Oakenshield" twice, and then a Witch slowed them down, and they ended up under the pressure of Minotaurs enhanced with "Power Attack"; meanwhile, the Riders who managed to reach them were playing "tag" with them, biting them on the rear).
2. The remaining battles until the Orange Garrison, which Tralsai reached on the 10th day, went without losses. While Tralsai was leveling up on harmless neutrals and breaking into the underground, Sigrif went straight from the Prophet to the Library and learned three spells (two starting spells and one with the help of a Rune located nearby), and then followed Tralsai with a support group (the main army).
3. Tralsai stormed the Garrison on the 6th day with 2 Hunters and 4 Scouts, as a result, it was taken (the battle is attached).
4. After storming the Garrison, Tralsai remained with one Hunter and served as an excellent bait for the Orange hero, who was nearby; he rushes after Tralsai, while my hero retreated slightly from the Garrison gate back (see the screenshot at the beginning of the 7th day).
5. On the next turn, Sigrif transfers everything he received at the start and the saved army to Tralsai and goes into the Garrison gate towards the empty Castle, while Tralsai with the entire army blocks the gate, as a result of which the Orange hero does not dare to attack it (screenshot of the situation during the 8th day).
6. Sigrif enters the empty Castle (this happens on the first day of the week, when the harvest is ripe there).

I haven't played further yet – I will continue when I have time; in the current and near future, I want to hire another hero and use him to form a normal army – bring all the existing Hunters and Scouts to a common denominator, also do the same with the Furies and Beasts, as well as with the Riders. In the end, I will have: about 70 Furies, approximately the same number of Hunters, a couple of dozen Riders, and one Witch, considering that Tralsai is currently level 11 and knows the starting Plague spell, he can already now (on the 9th day) quite decently meet an army of "a hundred Archers, Dancers, and fifty Druids".

In the future, I plan to: first of all, crush the Orange hero and develop the Castle, and then I will transfer the army to Sigrif and start leveling him up (there are plenty of strong and stupid neutrals around that can be easily used to gain experience), etc.