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The problems only arise when exiting the dungeon. I read recommendations to go through the weak garrison near the shrine (although the danger level is actually High there). But then, not only do you have to break through it with losses, but Daleb also attacks and, by the way, destroys the ballista, which you can't get anywhere else. I didn't do it that way. Railag has maxed-out logistics, and Shadia has boots. After exiting to the surface and upgrading the scouts, we go straight down, boldly bypassing the blue city. Railag goes around to the right and manages to break through the last garrison at the bottom and climb back up a bit, while Shadia, on the same turn, bypasses the blue city on the left and ends her movement right at the gates. The losses in the auto-battle are 10 lizards and a fury, but the main thing is to save the hydras. Then Daleb (or Grol, which doesn't really matter) attacks Railag, not Shadia. We fight manually; all casualties are heroes, but we are left with 350 assassins and, importantly, all the hydras. We give Railag all the remaining dogs from the basement, and they both safely exit past the garrison. With this setup, the battle against Wier becomes a Medium difficulty, not a hopeless or High difficulty, as it would be if we went through the "weak garrison" mentioned at the beginning.
P.S. The trick with the auto-battle against Wier is that the AI casts only Empowered Armageddon for Railag. And if there isn't enough "stupid" hydra meat, then, of course, you lose. If we fight manually, then, of course, we first reduce the number of demons on the enemy side and use all the mass-damage spells, depending on the enemy's formation. By the way, there is an unclaimed Titan's Trident lying around at the exit of the dungeon, so if someone loves casting lightning spells, it's worth picking it up. An enhanced Chain Lightning is also a useful thing.
