using System;

using System.Collections.Generic;

using Newtonsoft.Json;

public class Program

{   

    public void Main()

    {

        const string json = @"{

                              ""map"": [

                                [""S"", ""S"", ""S"", ""S""],

                                [""S"", ""S"", ""C"", ""S""],

                                [ ""S"", ""S"", ""S"", ""S"" ],

                                [""S"", ""null"", ""S"", ""S""]

                              ],

                              ""start"": {""X"": 3, ""Y"": 0, ""facing"": ""N""},

                              ""commands"": [ ""TL"",""A"",""C"",""A"",""C"",""TR"",""A"",""C""],

                              ""battery"": 80

                            }";

        var items = JsonConvert.DeserializeObject<Inicial>(json);

        Console.WriteLine(items.battery);

    }

}

​

​

public class Inicial

{

    public IList<IList<string>> map { get; set; } // Mude aqui

    public Start start { get; set; }

    public IList<string> commands { get; set; }

    public string battery { get; set; }

}

​

public class Start

{

    public int X { get; set; }

    public int Y { get; set; }

    public string faccing { get; set; }

}