Tower tactics.

The weakness of this faction lies in its strength. The player gets used to playing with only ranged units and winning every battle easily. Judge for yourself: 3 ranged units, plus good ranged magic, and the Wizards and Alchemists of the Tower don't like melee combat. Therefore, when they encounter an opponent who is skilled in melee combat, they quickly lose the battle. In my opinion, the most unpleasant opponent for the Tower is the Overlord with Tactics, Minotaurs, and Expertise.