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CSharp · Console

/Program.cs

using System;
using System.Collections.Generic;
using Newtonsoft.Json;

public class Program
{
	public static void Main()
	{
		string json = @"[
		  {
			""name"": ""itemName"",
			""level"": 8,
			""imgUrl"": ""https://imgItemName.png"",
			""description"": ""itemDescription."",
			""statistics"": [
			{
				""Vitality"": {
				  ""min"": 10,
				  ""max"": 13
				}
			}
			]
		  }
		]";
		var result = JsonConvert.DeserializeObject<List<Item>>(json);
		Console.WriteLine(result[0].Statistics[0].Vitality.Min);
	}
}

public class Vitality
{
	[JsonProperty("min")]
	public int Min { get; set; }

	[JsonProperty("max")]
	public int Max { get; set; }
}

public class Statistic
{
	[JsonProperty("Vitality")]
	public Vitality Vitality { get; set; }
}

public class Item
{
	[JsonProperty("name")]
	public string Name { get; set; }

	[JsonProperty("level")]
	public int Level { get; set; }

	[JsonProperty("imgUrl")]
	public string ImgUrl { get; set; }

	[JsonProperty("description")]
	public string Description { get; set; }

	[JsonProperty("statistics")]
	public List<Statistic> Statistics { get; set; }
}