Auto-translated
Regarding the overall game tactics. It's important to understand that the hero needs to reach the destination within 5 days. To do this, on the first day, you need to maximize the hero's Logistics skill, visit the stables, equip boots, and give them a creature with 11+ speed. On the second day, equip gloves and upgrade Logistics to Expert. On the third day, after the battle with the Black Dragons, you'll need to move at a speed of 9. On the fourth day, you need to upgrade to level 8 on the treasure chest; otherwise, you won't have enough movement points. That's basically it. The main thing is to get this done, and then you need to combine turn management, economy, and battles into one puzzle. This requires effort, but the problem must be solved; otherwise, you won't be able to complete it in 5 days :D. The following tasks arise on the path to victory:
1. Collect enough gold for a second hero, doing so in a way that Tamara can reach the tent on the 2nd day, while also collecting sulfur and leaving the army in the castle. I also wanted to buy a Fly for faster movement, but it didn't work out.
2. Recruit the Lizardmen. You need to buy a Fly and 2 Gnolls.
3. Obtain boots with fast heroes.
4. Find 2 Mercury and 2 Sulfur to upgrade the Serpents, without losing momentum.
5. To upgrade Gunnarr's Logistics, you shouldn't take the middle treasure chest under the castle; otherwise, he won't make it in time.
6. Don't take the Earth book, as there isn't enough time.
7. Collect money to upgrade the Sharpshooters; this is an expensive endeavor.
8. Gather skeletons for the battle with the Black Dragons, as there is no other "meat" available.
9. Develop Diplomats to recruit the Air Elementals.
10. Plan key battles:
Battle with the Red Dragons

Initially, 6 Lizardmen are separated so that after a wait, they can be sacrificed, thereby forcing 5 Dragons under the attack of 2 Inferno creatures. In the second round, the Black Dragon flies away and attacks the Lizardmen, taking damage from the Sharpshooters. GG. The main thing is to save the Skeletons and Sharpshooters.
Battles with the first Minotaurs and Gray Bears

There's nothing complicated here. Luna simply burns them. You don't need to conserve mana for the Minotaurs, as there will be a fountain afterward. The Bears can be defeated with 2 walls, as usual. Within 5 days, Luna should be able to visit the red tent.
Battle with the Black Dragons

It's simple here. Just position your units as shown in the screenshot. Simply hold off the single Dragons with Air Elementals and eliminate the double Dragons with Sharpshooters. You need to avoid morale penalties and ideally get lucky to save Sharpshooters, although you can do without it. After the battle, everyone except the Sharpshooters is dismissed.
The battle with the Ghost Dragons and the second Minotaurs is not difficult, as you no longer need to conserve the Sharpshooters. Somewhere in parallel, you need to prepare 2 Expert Logistics heroes with stables, but these are minor details. The main thing is to play well on days 1 and 2 and believe in your abilities :)
1. Collect enough gold for a second hero, doing so in a way that Tamara can reach the tent on the 2nd day, while also collecting sulfur and leaving the army in the castle. I also wanted to buy a Fly for faster movement, but it didn't work out.
2. Recruit the Lizardmen. You need to buy a Fly and 2 Gnolls.
3. Obtain boots with fast heroes.
4. Find 2 Mercury and 2 Sulfur to upgrade the Serpents, without losing momentum.
5. To upgrade Gunnarr's Logistics, you shouldn't take the middle treasure chest under the castle; otherwise, he won't make it in time.
6. Don't take the Earth book, as there isn't enough time.
7. Collect money to upgrade the Sharpshooters; this is an expensive endeavor.
8. Gather skeletons for the battle with the Black Dragons, as there is no other "meat" available.
9. Develop Diplomats to recruit the Air Elementals.
10. Plan key battles:
Battle with the Red Dragons
Initially, 6 Lizardmen are separated so that after a wait, they can be sacrificed, thereby forcing 5 Dragons under the attack of 2 Inferno creatures. In the second round, the Black Dragon flies away and attacks the Lizardmen, taking damage from the Sharpshooters. GG. The main thing is to save the Skeletons and Sharpshooters.
Battles with the first Minotaurs and Gray Bears
There's nothing complicated here. Luna simply burns them. You don't need to conserve mana for the Minotaurs, as there will be a fountain afterward. The Bears can be defeated with 2 walls, as usual. Within 5 days, Luna should be able to visit the red tent.
Battle with the Black Dragons
It's simple here. Just position your units as shown in the screenshot. Simply hold off the single Dragons with Air Elementals and eliminate the double Dragons with Sharpshooters. You need to avoid morale penalties and ideally get lucky to save Sharpshooters, although you can do without it. After the battle, everyone except the Sharpshooters is dismissed.
The battle with the Ghost Dragons and the second Minotaurs is not difficult, as you no longer need to conserve the Sharpshooters. Somewhere in parallel, you need to prepare 2 Expert Logistics heroes with stables, but these are minor details. The main thing is to play well on days 1 and 2 and believe in your abilities :)