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Let me explain the situation: it was a random map game, L-shaped map, I don't remember the template.
The roads are slow, the respawn points are poor, and there are no good hiding spots. I took the smallest crypt from the treasure chests on the first day, and there's also a large Naga Bank available.
On the 2nd day, I have 4 heroes. By scouting the area, I see that if I gather all the groups of creatures, chests, and resources, the Hydras will most likely appear in a fort somewhere around the 7th day. But I decided to go to my neighbors. I hired two more heroes. There are two paths: one to the Barbarian lands, and the other to the Dungeon. I push through both. At the top, I run into Liches guarding the black market. I can't go around them, and I've already gone too far. I don't go deeper because of the penalty. In the Dungeon, I run into a lot of air elementals, and I break through with losses. On the 6th (or 5th) day, I take a secondary town. But the Hydras don't appear!
After the game, I looked at the map, and if I had limited myself to 3-4 heroes, I would have been able to break through to the area with trees on the 2nd week and get some Geese.
Usually, I hire at least 5 heroes at the beginning, and it has always paid off, but here it seems that I would have been better off with 4.
2invisible: I think the attack power of Hydras is much higher than that of Vivs, and not only because you can take Gnomish Enclaves with just one Hydra. And if you don't buy them on the first day, you can use your old troops to earn some money, and then buy them on the 2nd day. It always worked. After all, Hydras are powerful against neutrals or in confined spaces