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Everyone has already completed this mission, but here's my approach.
Irina is a mage, so she doesn't need an army at all, and there's no need to accumulate anything.
What you need to have: the Stone Skin spell (essential), a few combat spells, like Lightning, and definitely Meditation. At the beginning of the map, you're at level 24, and if you've developed correctly, Stone Skin will last for 3-4 turns. You need 4 (I reached it at level 25, even without boosting earth magic). We don't need an army at all, just one unit of Kappa with high initiative, maybe a ring for initiative or the "Ambush" skill. The main thing is that we go first. We cast Stone Skin on them, which makes them invulnerable. We attack the enemy with spells, refresh Stone Skin every 4 turns, and use Meditation or Mana Leech when mana runs out. This way, you can capture one city per week without buying troops and destroying any enemy heroes, even deadly ones. When all the cities are captured, you can buy an army and eliminate the neutrals. I played on the normal difficulty level.
Irina is a mage, so she doesn't need an army at all, and there's no need to accumulate anything.
What you need to have: the Stone Skin spell (essential), a few combat spells, like Lightning, and definitely Meditation. At the beginning of the map, you're at level 24, and if you've developed correctly, Stone Skin will last for 3-4 turns. You need 4 (I reached it at level 25, even without boosting earth magic). We don't need an army at all, just one unit of Kappa with high initiative, maybe a ring for initiative or the "Ambush" skill. The main thing is that we go first. We cast Stone Skin on them, which makes them invulnerable. We attack the enemy with spells, refresh Stone Skin every 4 turns, and use Meditation or Mana Leech when mana runs out. This way, you can capture one city per week without buying troops and destroying any enemy heroes, even deadly ones. When all the cities are captured, you can buy an army and eliminate the neutrals. I played on the normal difficulty level.
