Simple fighting console menu

Console menu

namespace MyCode
{
    internal class Program
    {
        static void Main(string[] args)
        {
            const string CommandExit = "0";
            const string CommandHeroHP = "1";
            const string CommandHeroDamage = "2";
            const string CommandEnemyHP = "3";
            const string CommandEnemyDamage = "4";;
            const string CommandStartFight = "5";
            const string CommandMenu = "9";

            Random random = new Random();

            int maxRandomValue = 100;
            int minRandomValue = 1;
            int heroHP = 0;
            int heroDamage = 0;
            int enemyHP = 0; 
            int enemyDamage = 0;
            string enteredCode;
            bool isActive = true;

            Console.WriteLine("You are in fight simulator!\n" +
                            "Enter number according your need: \n" +
                            "By default stats are at 0 \n" +
                            "Stat that equal 0 will be randomized \n\n" +
                            $"{CommandHeroHP} - Set your character health \n" +
                            $"{CommandHeroDamage} - Set your character damage \n" +
                            $"{CommandEnemyHP} - Set your enemy health \n" +
                            $"{CommandEnemyDamage} - Set your enemy damage \n" +
                            $"{CommandStartFight} - Fight! \n" +
                            $"{CommandMenu} - Show menu\n" +
                            $"{CommandExit} - Exit \n" +
                            "\nEnter command: ");

            while (isActive)
            {
                enteredCode = Console.ReadLine();

                switch (enteredCode)
                {
                    case CommandExit:
                        Console.WriteLine("Exit");
                        isActive = false;
                        break;

                    case CommandHeroHP:
                        Console.WriteLine("Enter amount of your character HP: ");
                        heroHP = int.Parse(Console.ReadLine());
                        Console.WriteLine("\nEnter next command: ");
                        break;

                    case CommandHeroDamage:
                        Console.WriteLine("Enter your character damage power: ");
                        heroDamage = int.Parse(Console.ReadLine());
                        Console.WriteLine("\nEnter next command: ");
                        break;

                    case CommandEnemyHP:
                        Console.WriteLine("Enter amount of your enemy HP: ");
                        enemyHP = int.Parse(Console.ReadLine());
                        Console.WriteLine("\nEnter next command: ");
                        break;

                    case CommandEnemyDamage:
                        Console.WriteLine("Enter your enemy damage power: ");
                        enemyDamage = int.Parse(Console.ReadLine());
                        Console.WriteLine("\nEnter next command: ");
                        break;

                    case CommandMenu:
                        Console.WriteLine("Enter number according your need: \n" +
                                        "By default stats are at 0 \n" +
                                        "Stat that equal 0 will be randomized \n" +
                                        $"{CommandHeroHP} - Set your character health \n" +
                                        $"{CommandHeroDamage} - Set your cgaracter damage \n" +
                                        $"{CommandEnemyHP} - Set your enemy health \n" +
                                        $"{CommandEnemyDamage} - Set your enemy damage \n" +
                                        $"{CommandStartFight} - Fight! \n" +
                                        $"{CommandMenu} - Show menu\n" +
                                        $"{CommandExit} - Exit \n" +
                                        "\nEnter command: ");
                        break;

                    case CommandStartFight:
                        int round = 0;
                        int zero = 0;

                        if (heroHP == zero)
                        {
                            heroHP = random.Next(minRandomValue, maxRandomValue);
                        }

                        if (heroDamage == zero)
                        {
                            heroDamage = random.Next(minRandomValue, maxRandomValue);
                        }

                        if (enemyHP == zero)
                        {
                            enemyHP = random.Next(minRandomValue, maxRandomValue);
                        }

                        if (enemyDamage == zero)
                        {
                            enemyDamage = random.Next(minRandomValue, maxRandomValue);
                        }

                        Console.WriteLine("FIGHT!");

                        while (heroHP != zero || enemyHP != zero)
                        {
                            round++;
                            Console.WriteLine($"Round: {round}");

                            heroHP -= enemyDamage;
                            enemyHP -= heroDamage;

                            Console.WriteLine($"Hero HP: {heroHP}, Enemy HP: {enemyHP}\n");

                            if (heroHP <= zero)
                            {
                                Console.WriteLine("Hero died! You lose!");
                                Console.WriteLine("Start new game!\n");
                                heroHP = zero;
                                enemyHP = zero;
                                heroDamage = zero;
                                enemyDamage = zero;
                                Console.WriteLine($"{CommandMenu} - Show menu\n");
                                break;
                            }

                            if (enemyHP <= zero && heroHP > zero)
                            {
                                Console.WriteLine("You win! Enemy died!");
                                Console.WriteLine("Start new game!\n");
                                heroHP = zero;
                                enemyHP = zero;
                                heroDamage = zero;
                                enemyDamage = zero;
                                Console.WriteLine($"{CommandMenu} - Show menu\n");
                                break;
                            }
                        }

                        break;

                    default:
                        Console.WriteLine("Error");
                        break;
                }
            }
        }
    }
}