Create a new version of paste:

using System;
using System.Collections.Generic;

namespace C_Sharp_Junior
{
    class Program
    {
        static void Main(string[] args)
        {
            bool isExit = false;
            Arena arena = new Arena();

            while (isExit == false)
            {
                Console.Write("1 - Выбрать бойцов и начать бой\n2 - Информация о бойцах\n3 - Выход из игры\nКоманда:");
                bool successfulConversion = int.TryParse(Console.ReadLine(), out int userInput);

                if (successfulConversion == true)
                {
                    switch (userInput)
                    {
                        case 1:
                            arena.ChooseFighter();
                            break;
                        case 2:
                            arena.PersonInfo();
                            break;
                        case 3:
                            isExit = true;
                            break;
                    }
                }

                Console.ReadKey();
                Console.Clear();
            }
        }
    }

    class Arena
    {
        private List<Warrior> _warriors;
        private List<Warrior> _warriorsUserInpyt;

        public Arena()
        {
            _warriors = new List<Warrior> { new Knight("Воин-Солдат", 100, 20, 70), new Magician("Маг-Черадей", 80, 50, 20, 100), new Engineer("Инжинер", 80, 30, 50, 15), new Archer("Лучник", 60, 15, 35, 20), new Healer("Медик", 150, 12, 20, 25) };
            _warriorsUserInpyt = new List<Warrior>();
        }

        public void PersonInfo()
        {
            for (int i = 0; i < _warriors.Count; i++)
            {
                _warriors[i].ShowInfo();
            }
        }

        public void ChooseFighter()
        {
            Console.WriteLine("Выберите бойцов:\n1- Воин-Солдат\n2- Маг-Черадей\n3- Инжинер\n4- Лучник\n5- Медик\n");
            Console.Write("Боец №1: ");
            int userInpyt1 = ChoiceWar();
            _warriorsUserInpyt.Add(_warriors[userInpyt1]);
            int userInpyt2;
            do
            {
                Console.Write("Боуц №2: ");
                userInpyt2 = ChoiceWar();
            } while (userInpyt1 == userInpyt2);
            _warriorsUserInpyt.Add(_warriors[userInpyt2]);
            Console.Clear();

            for (int i = 0; i < _warriorsUserInpyt.Count; i++)
            {
                _warriorsUserInpyt[i].ShowInfo();
            }

            Console.Write("\nНажмите кнопку для начала боя");
            Console.ReadKey();
            Console.Clear();
            Battle();
        }

        private int ChoiceWar()
        {
            int userInput = 0;
            bool warriorChosenCorrectly = false;

            while (warriorChosenCorrectly == false)
            {
                bool successfulConversion = int.TryParse(Console.ReadLine(), out userInput);

                if (successfulConversion == true && userInput <= _warriors.Count && userInput > 0)
                {
                    warriorChosenCorrectly = true;
                }
                else
                {
                    Console.WriteLine("Бойца с таким номером нет. Выберите другова бойца.");
                }
            }

            return userInput - 1;
        }

        private void Battle()
        {
            int round = 0;

            while (_warriorsUserInpyt[0].Health > 0 && _warriorsUserInpyt[1].Health > 0)
            {
                Console.WriteLine($"Жизни {_warriorsUserInpyt[0].NameWarrior} - {_warriorsUserInpyt[0].Health}");
                Console.WriteLine($"Жизни {_warriorsUserInpyt[1].NameWarrior} - {_warriorsUserInpyt[1].Health}");
                _warriorsUserInpyt[0].TakingDamage(_warriorsUserInpyt[1].Damage);
                _warriorsUserInpyt[1].TakingDamage(_warriorsUserInpyt[0].Damage);

                if (round == 2)
                {
                    _warriorsUserInpyt[0].AbilityStrike();
                    _warriorsUserInpyt[1].AbilityStrike();
                    round = 0;
                }
                round++;
            }

            if (_warriorsUserInpyt[0].Health <= 0)
            {
                Console.WriteLine("Победил " + _warriorsUserInpyt[1].NameWarrior);
            }
            else if (_warriorsUserInpyt[1].Health <= 0)
            {
                Console.WriteLine("Победил " + _warriorsUserInpyt[0].NameWarrior);
            }
            _warriorsUserInpyt.Clear();
        }
    }

    class Warrior
    {
        public string NameWarrior { get; private set; }
        public int Armor { get; private set; }
        public int Health { get; private set; }
        public int Damage { get; private set; }

        public Warrior(string nameWarrior, int health, int damage, int armor)
        {
            NameWarrior = nameWarrior;
            Health = health;
            Damage = damage;
            Armor = armor;
        }

        public virtual void ShowInfo()
        {
            Console.WriteLine($"Тип: {NameWarrior}\nЗдоровье: {Health}\nБроня: {Armor}\nУрон: {Damage}");
        }

        public void TakingDamage(int damage)
        {
            Health -= Armor - damage;
        }

        public void ChangeHealthAbilityStrike()
        {
            int valueRestoringHealth = 200;
            Health = valueRestoringHealth;
        }

        public void ChangeDamageAbilityStrike()
        {
            int valueDamageEntrainment = 2;
            Damage *= valueDamageEntrainment;
        }

        public virtual void AbilityStrike()
        {
        }
    }

    class Knight : Warrior
    {
        public Knight(string nameWarrior, int health, int damage, int armor) : base(nameWarrior, health, damage, armor)
        {
        }

        public override void ShowInfo()
        {
            base.ShowInfo();
            Console.WriteLine("Способность: Режим ярости");
            Console.WriteLine(new string('-', 70));
        }

        public override void AbilityStrike()
        {
            ChangeDamageAbilityStrike();
        }
    }

    class Magician : Warrior
    {
        private int _mana;

        public Magician(string nameWarrior, int health, int damage, int armor, int mana) : base(nameWarrior, health, damage, armor)
        {
            _mana = mana;
        }

        public override void ShowInfo()
        {
            base.ShowInfo();
            Console.WriteLine($"Мана: {_mana}\nСпособность: Выстрел магическими шарами");
            Console.WriteLine(new string('-', 70));
        }

        public override void AbilityStrike()
        {
            int consumptionMana = 40;
            if (_mana > consumptionMana)
            {
                ChangeDamageAbilityStrike();
                _mana -= consumptionMana;
            }
        }
    }

    class Engineer : Warrior
    {
        private int _mechanisms;

        public Engineer(string nameWarrior, int health, int damage, int armor, int mechanisms) : base(nameWarrior, health, damage, armor)
        {
            _mechanisms = mechanisms;
        }

        public override void ShowInfo()
        {
            base.ShowInfo();
            Console.WriteLine($"Механизмы: {_mechanisms}\nСпособность: Постройка царь-пушки");
            Console.WriteLine(new string('-', 70));
        }
        public override void AbilityStrike()
        {
            int consumptionMechanisms = 50;
            if (_mechanisms >= consumptionMechanisms)
            {
                ChangeDamageAbilityStrike();
                _mechanisms -= consumptionMechanisms;
            }
        }
    }

    class Archer : Warrior
    {
        private int _arrows;

        public Archer(string nameWarrior, int health, int damage, int armor, int arrows) : base(nameWarrior, health, damage, armor)
        {
            _arrows = arrows;
        }

        public override void ShowInfo()
        {
            base.ShowInfo();
            Console.WriteLine($"Стрелы: {_arrows}\nСпособность: Шквал стрел");
            Console.WriteLine(new string('-', 70));
        }

        public override void AbilityStrike()
        {
            int ConsumptionArrows = 25;
            if (_arrows >= ConsumptionArrows)
            {
                ChangeDamageAbilityStrike();
                _arrows -= ConsumptionArrows;
            }
        }
    }

    class Healer : Warrior
    {
        private int _potions;

        public Healer(string nameWarrior, int health, int damage, int armor, int potions) : base(nameWarrior, health, damage, armor)
        {
            _potions = potions;
        }

        public override void ShowInfo()
        {
            base.ShowInfo();
            Console.WriteLine($"Зелья: {_potions}\nСпособность: Полное восстановление здоровье + баф");
            Console.Write(new string('-', 70));
        }

        public override void AbilityStrike()
        {
            int consumptionPotions = 10;
            if (_potions >= consumptionPotions)
            {
                ChangeHealthAbilityStrike();
                _potions -= consumptionPotions;
            }
        }
    }
}