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Install the campaign on a clean version of Heroes, and these bugs will disappear. The huts and barracks are scripted and react when a hero visits them, but some mod breaks the script.
The probability of stunning is calculated similarly to "stunning strike"; you can find more detailed information in the manual.
Not all huts and barracks were non-functional; some of them... I couldn't enter them, but the mission is already completed, but still.
By the way, the scenario is well-optimized; there were no crashes at all.
Всегда играю на Г.