FinalBattle/Menu.cs

public struct Menu
{
    public static void BuildMenu(Character character)
    {
        int index = 1;
        foreach (string action in character.CharacterEnabledActions)
        {
            if (action == "Health Potion")
            {
                Console.WriteLine($"{index}. {action} ({GameState.Instance.heroPotionsAvailable})");
            }
            else
            {
                Console.WriteLine($"{index}. {action}");
            }
            index++;
        }
    }

    public static void BuildItemsMenu(Character character)
    {
        int index = 1;
        if (character.equipedItems.Any())
        {
            Console.WriteLine($"{index}. Unequip {character.equipedItems[0].Description}");
            index++;
        }
        foreach (Item item in GameState.Instance.heroInventory)
        {
            Console.WriteLine($"{index}. {item.Description}");
            index++;
        }
        Console.WriteLine($"{index}. Go back");
    }
}