Playing as the Legions (Disciples 2). Auto-translated

An interesting strategy is described in the previous posts. Personally, I often choose a warrior hero with traits and the "Obsessed" skill. But without defensive spells and healing abilities, I don't know how to play as the Dungeon faction. Sitting in the castle after each battle is a pain. Therefore, I usually choose a warrior as the commander, and waiting 5 turns to buy another hero seems too long to me.