I am looking for maps for Heroes III.

I also played "Life Adventure" in the Heroes campaign.

This is definitely a regular map. The map size is X or XL. The map is definitely for Heroes 3 (the original).
I played it in 2009-2010. I remember it like it was yesterday:
The beginning is in the RPG genre - you have one hero with a castle - the castle has no buildings except for the town hall (+500), but at the same time, 500 gold is deducted every day - that is, you start with 0 gold, and it remains that way.

Below the castle are 4 seer huts, behind one of the huts is a wooden shield. To the right is a field with two peasants. To the left is a forest. In the upper left is a shipyard; to build a ship, you need 10 wood and 1000 gold.
At the beginning, we go to the right to collect gold and resources. Along the way, we encounter Wolf Riders and Hobgoblins. We have 1 Knight. We find a Clover of Fortune, climb the mountain, and see that many mages guard the entrance, but one agrees to join us. And now we have a Knight, a Mage, and then 1 Fairy (who joins us in the forest). We go up the mountain and through the portal, we move underground - there we need to choose which two elements of magic we will choose and, accordingly, receive spells - either air and fire or water and earth (accordingly, we will play the entire map with arrows and speed or with slow and fireball) - in general, after choosing the elements, receiving the book, learning 2 spells, we leave the dungeon, return to the castle - then to the left through the forest and we go to the shipyard

It should be noted that gaining experience is prohibited on the map. That is, as it was 0 experience, it will remain that way. There is a Guardian quest who asks to have 10 experience and a signature - this quest is specifically made impossible, you cannot gain experience on this map.

Sailing down the river, we don't touch the stacks of thousands of water elementals, but we break through the stacks where there are 3 of them and land on the left edge in the middle of the map and begin to explore the upper half.

There are 5 Ogres guarding the artifact, a sword, there are ambushes of 3 trolls with their damn regeneration, in general, we go along the paths up the map and see that there is a Guardian of the Question on the left - that is, we need to go to the right - and on the right, a real city appears before us... we enter it through the gate, and there we run around, there is a market, there is a crypt, there is a library, there is a defense tower, there is an arena, and we slowly level up to 2-2-2-2 to be able to study in the library, then, having 4 magic power and 40 mana, we can break through the guard on the bridge, 1 Black Knight - and then we go to the right part of the map downwards, there we find 1 Imp and return with him to the city to give it to the seer. There are about 15 of these quests from the seer.

Then, having grown stronger, we find the second passage to the dungeon from the city, there we see a river and sail along it, along the underground river - landing to the left or right to go deeper into the caves, for artifacts that enhance the corresponding magic - therefore, we will not visit 2 paths out of four, since we made our choice at the beginning of the game.

Then, returning with these spheres to the city, buying an army for the money from the completed quests in the huts, we go to the upper left part of the map, pass the Guardian quest, and begin the campaign through the swamps, killing the undead - we also encounter a hero with 1 Pikeman, but with 50 defense and 50 attack. We kill him, at the end we meet the main enemy - we defeat him with our magic and the remnants of the army, and at the end there is an inscription:
Wading through the swamp, you feel a great relief as you clean the mud from the remains of his feet - in the future, the map will be continued, save this penultimate save - you have won! And that's it.