So if you encounter an enemy attack, you can throw stones at the people below. In this case, perhaps the climbing work of the ladder will be hindered to some extent. Of course, from another point of view, even if you are not facing a person with a fixed ladder, if you successfully hit a climbing enemy with a stone on the wall, you can get unexpected gains.
Of course, the best way to solve the ladder attack is actually fire attack. After all, in most cases, ladders are made of wood, which is easy to catch fire. If the opponent attacks with a ladder, you only need to prepare more kerosene, then sprinkle it on the other side's ladder and set a fire. The effect will be very good.