diff --git a/Common/Utils/Logger.cs b/Common/Utils/Logger.cs
index 536f776..1665827 100644
--- a/Common/Utils/Logger.cs
+++ b/Common/Utils/Logger.cs
@@ -5,12 +5,14 @@ namespace Common.Utils
     public class Logger
     {
         private readonly string _name;
+        private readonly bool TraceOnError;
         private readonly ConsoleColor _color;
 
-        public Logger(string name, ConsoleColor color = ConsoleColor.Cyan)
+        public Logger(string name, ConsoleColor color = ConsoleColor.Cyan, bool traceOnError = true)
         {
             _name = name;
             _color = color;
+            TraceOnError = traceOnError;
         }
 
         public void Log(params string[] message)
@@ -44,7 +46,7 @@ namespace Common.Utils
         public void Trail(params string[] msg)
         {
             Console.ForegroundColor = ConsoleColor.DarkGray;
-            Console.WriteLine($"\t→ {string.Join(' ', msg)}");
+            Console.WriteLine($"\t└── {string.Join(' ', msg)}");
             Console.ResetColor();
         }
 
@@ -59,12 +61,14 @@ namespace Common.Utils
             Console.ResetColor();
             Console.Write("> ");
             Console.ForegroundColor = ConsoleColor.White;
-            Console.BackgroundColor = ConsoleColor.DarkRed;
+            if(TraceOnError)
+                Console.BackgroundColor = ConsoleColor.DarkRed;
             Console.WriteLine(string.Join("\t", message));
             Console.ResetColor();
 #if DEBUG
             StackTrace trace = new(true);
-            Trail(trace.ToString());
+            if(TraceOnError)
+                Trail(trace.ToString());
 #endif
         }
         
diff --git a/GameServer/Commands/Command.cs b/GameServer/Commands/Command.cs
index 6f36f76..9abc26e 100644
--- a/GameServer/Commands/Command.cs
+++ b/GameServer/Commands/Command.cs
@@ -1,26 +1,74 @@
 using Common.Utils;
 using System.Reflection;
+using PemukulPaku.GameServer.Game;
 
 namespace PemukulPaku.GameServer.Commands
 {
+    /// <summary>
+    ///  What methods should be overriden based on CommandType:
+    ///  <para>All, Handler should override all virtual methods in Command.</para>
+    ///  <para>Console, Handler should override Run method with string[] args.</para>
+    ///  <para>Player, Handler should override Run method with Player / Session args.</para>
+    /// </summary>
     public abstract class Command
     {
-        public static readonly Logger c = new("Command", ConsoleColor.Cyan);
+        public static readonly Logger c = new("Command", ConsoleColor.Cyan, false);
         public string Name = string.Empty;
+        public string Description = string.Empty;
+        public CommandType CmdType = CommandType.Player;
 
-        public virtual void Run(Session? session, string[] args)
+        /// <summary>
+        /// Call this when player is online or have active session.
+        /// </summary>
+        /// <param name="session">The Session instance</param>
+        /// <exception cref="NotImplementedException"></exception>
+        public virtual void Run(Session session, string[] args)
         {
+            throw new NotImplementedException();
+        }
+        
+        /// <summary>
+        /// Only call this when player have no session.
+        /// </summary>
+        /// <param name="player">The Player instance</param>
+        /// <exception cref="NotImplementedException"></exception>
+        public virtual void Run(Player player, string[] args)
+        {
+            throw new NotImplementedException();
+        }
+        
+        /// <summary>
+        /// Please only call this on ReadLine.
+        /// </summary>
+        /// <exception cref="NotImplementedException"></exception>
+        public virtual void Run(string[] args)
+        {
+            throw new NotImplementedException();
         }
     }
 
+    /// <summary>
+    /// Command types used to defines what action should be taken by command interpreter or handler.
+    /// </summary>
+    public enum CommandType
+    {
+        All,
+        Console,
+        Player
+    };
+
     [AttributeUsage(AttributeTargets.Class)]
     public class CommandHandler : Attribute
     {
         public string Name { get; }
+        public string Description { get; }
+        public CommandType CmdType { get; }
 
-        public CommandHandler(string name)
+        public CommandHandler(string name, string description, CommandType type = CommandType.Player)
         {
             Name = name;
+            Description = description;
+            CmdType = type;
         }
     }
 
@@ -47,6 +95,8 @@ namespace PemukulPaku.GameServer.Commands
                 if (cmd is not null)
                 {
                     cmd.Name = attr.Name;
+                    cmd.Description = attr.Description;
+                    cmd.CmdType = attr.CmdType;
                     Commands.Add(cmd);
 
 #if DEBUG
diff --git a/GameServer/Commands/HelpCommand.cs b/GameServer/Commands/HelpCommand.cs
new file mode 100644
index 0000000..bf23d53
--- /dev/null
+++ b/GameServer/Commands/HelpCommand.cs
@@ -0,0 +1,24 @@
+namespace PemukulPaku.GameServer.Commands
+{
+
+    [CommandHandler("help", "Shows the help page", CommandType.All)]
+    internal class HelpCommand : Command
+    {
+        public override void Run(Session session, string[] args)
+        {
+            // TODO: Implement online help
+            base.Run(session, args);
+        }
+
+        public override void Run(string[] args)
+        {
+            foreach (Command Cmd in CommandFactory.Commands)
+            {
+                Console.ForegroundColor= ConsoleColor.White;
+                Console.WriteLine("      " + Cmd.Name);
+                Console.ResetColor();
+                c.Trail(Cmd.Description);
+            }
+        }
+    }
+}
diff --git a/GameServer/Commands/ReadLine.cs b/GameServer/Commands/ReadLine.cs
new file mode 100644
index 0000000..e1b0309
--- /dev/null
+++ b/GameServer/Commands/ReadLine.cs
@@ -0,0 +1,53 @@
+namespace PemukulPaku.GameServer.Commands
+{
+    public class ReadLine
+    {
+        public static ReadLine? Instance { get; private set; }
+        public Session? session = null;
+
+        public static ReadLine GetInstance()
+        {
+            return Instance ??= new();
+        }
+
+        public void Start()
+        {
+            while (true)
+            {
+                string? line = Console.ReadLine();
+
+                if (!string.IsNullOrEmpty(line))
+                {
+                    List<string> args = line.Split(' ').ToList();
+                    Command? Cmd = CommandFactory.Commands.Find(cmd => args[0] == cmd.Name.ToLower());
+
+                    if(Cmd != null)
+                    {
+                        args.RemoveAt(0);
+
+                        if (Cmd.CmdType == CommandType.All)
+                        {
+                            Cmd.Run(args.ToArray());
+                        }
+                        else if(session != null)
+                        {
+
+                            Command.c.Log("Command executed");
+                        }
+                        else
+                        {
+                            Command.c.Error("Invalid usage, try selecting session first with target");
+                            continue;
+                        }
+
+                        continue;
+                    }
+                    else
+                    {
+                        Command.c.Error("Command not found, try using help");
+                    }
+                }
+            }
+        }
+    }
+}
diff --git a/GameServer/Commands/TestCommand.cs b/GameServer/Commands/TestCommand.cs
index 143419a..90a5f56 100644
--- a/GameServer/Commands/TestCommand.cs
+++ b/GameServer/Commands/TestCommand.cs
@@ -1,11 +1,9 @@
-using Common;
-
-namespace PemukulPaku.GameServer.Commands
+namespace PemukulPaku.GameServer.Commands
 {
-    [CommandHandler("test")]
+    [CommandHandler("test", "Test command used for testing")]
     public class TestCommand : Command
     {
-        public override void Run(Session? session, string[] args)
+        public override void Run(Session session, string[] args)
         {
             if (args.Length < 3)
             {
diff --git a/GameServer/Handlers/StageEndReqHandler.cs b/GameServer/Handlers/StageEndReqHandler.cs
index be8627f..e78cdc0 100644
--- a/GameServer/Handlers/StageEndReqHandler.cs
+++ b/GameServer/Handlers/StageEndReqHandler.cs
@@ -47,7 +47,6 @@ namespace PemukulPaku.GameServer.Handlers
                 session.ProcessPacket(Packet.FromProto(new GetMainDataReq() { }, CmdId.GetMainDataReq));
                 session.ProcessPacket(Packet.FromProto(new GetEquipmentDataReq() { }, CmdId.GetEquipmentDataReq));
                 session.ProcessPacket(Packet.FromProto(new GetWorldMapDataReq() { }, CmdId.GetWorldMapDataReq));
-                session.ProcessPacket(Packet.FromProto(new ChapterGroupGetDataReqHandler() { }, CmdId.ChapterGroupGetDataReq));
                 session.ProcessPacket(Packet.FromProto(new GetStageDataReq() { }, CmdId.GetStageDataReq));
 
                 Rsp.PlayerExpReward = 100;
diff --git a/Program.cs b/Program.cs
index 330ffe8..323c4b0 100644
--- a/Program.cs
+++ b/Program.cs
@@ -25,25 +25,7 @@ namespace PemukulPaku
 
             Player Player = new(User.FromName("test"));
 
-            while (true)
-            {
-                string? line = Console.ReadLine();
-
-                if (!string.IsNullOrEmpty(line))
-                {
-                    foreach (Command cmd in CommandFactory.Commands)
-                    {
-                        if (line.StartsWith(cmd.Name.ToLower()))
-                        {
-                            List<string> args = line.Split(' ').ToList();
-                            args.RemoveAt(0);
-
-                            cmd.Run(null, args.ToArray());
-                            break;
-                        }
-                    }
-                }
-            }
+            ReadLine.GetInstance().Start();
         }
     }
 }
\ No newline at end of file