ArmorDamageStrategy

namespace Composite
{
    public class ArmorDamageStrategy : IDamageStrategy
    {
        public ArmorDamageStrategy(int armor) =>
            Armor = armor;

        public int Armor { get; }

        public int CalculateFinalDamage(int damage)
        {
            // Учитываем броню при расчете урона
            int finalDamage = damage - Armor;

            return finalDamage > 0 ? finalDamage : 0;
        }
    }
}