diff --git a/EpinelPS/Database/JsonDb.cs b/EpinelPS/Database/JsonDb.cs
index d6eb9ac..6b62245 100644
--- a/EpinelPS/Database/JsonDb.cs
+++ b/EpinelPS/Database/JsonDb.cs
@@ -82,6 +82,12 @@ namespace EpinelPS.Database
         /// </summary>
         public long AvailableAt;
     }
+    public class SimroomData
+    {
+        public int CurrentDifficulty;
+        public int CurrentChapter;
+        public bool Entered = false;
+    }
     public class ResetableData
     {
         public int WipeoutCount = 0;
@@ -89,6 +95,7 @@ namespace EpinelPS.Database
         public int InterceptionTickets = 3;
         public List<int> CompletedDailyMissions = [];
         public int DailyMissionPoints;
+        public SimroomData SimRoomData = new();
     }
     public class WeeklyResetableData
     {
diff --git a/EpinelPS/LobbyServer/Event/GetChallengeStage.cs b/EpinelPS/LobbyServer/Event/GetChallengeStage.cs
index 0520898..dadfed0 100644
--- a/EpinelPS/LobbyServer/Event/GetChallengeStage.cs
+++ b/EpinelPS/LobbyServer/Event/GetChallengeStage.cs
@@ -7,7 +7,7 @@ namespace EpinelPS.LobbyServer.Event
     {
         protected override async Task HandleAsync()
         {
-            var req = await ReadData<ResChallengeEventStageData>();
+            var req = await ReadData<ReqChallengeEventStageData>();
             var user = GetUser();
 
             var response = new ResChallengeEventStageData();
diff --git a/EpinelPS/LobbyServer/Event/Minigame/CE002/GetCe002Data.cs b/EpinelPS/LobbyServer/Event/Minigame/CE002/GetCe002Data.cs
new file mode 100644
index 0000000..a48cc95
--- /dev/null
+++ b/EpinelPS/LobbyServer/Event/Minigame/CE002/GetCe002Data.cs
@@ -0,0 +1,26 @@
+using EpinelPS.Utils;
+
+namespace EpinelPS.LobbyServer.Event.Minigame.CE002
+{
+    [PacketPath("/event/minigame/ce002/get")]
+    public class GetCe002Data : LobbyMsgHandler
+    {
+        protected override async Task HandleAsync()
+        {
+            var req = await ReadData<ReqGetMiniGameCe002Data>();
+            var user = GetUser();
+
+            var response = new ResGetMiniGameCe002Data
+            {
+                Data = new()
+                {
+                    Ce002Id = req.Ce002Id
+                }
+            };
+
+            // TODO implement properly
+
+            await WriteDataAsync(response);
+        }
+    }
+}
diff --git a/EpinelPS/LobbyServer/LobbyHandler.cs b/EpinelPS/LobbyServer/LobbyHandler.cs
index 06cd49a..f292d3a 100644
--- a/EpinelPS/LobbyServer/LobbyHandler.cs
+++ b/EpinelPS/LobbyServer/LobbyHandler.cs
@@ -100,9 +100,10 @@ namespace EpinelPS.LobbyServer
         {
             var encryptionToken = new PasetoBuilder().Use(ProtocolVersion.V4, Purpose.Local)
                              .WithKey(JsonDb.Instance.LauncherTokenKey, Encryption.SymmetricKey)
-                             .Decode(token, new PasetoTokenValidationParameters() { ValidateLifetime = true });
+                             .Decode(token, new PasetoTokenValidationParameters() { ValidateLifetime = true }) ?? throw new Exception("failed to decrypt");
+            var elem = (encryptionToken.Paseto.Payload["data"] as System.Text.Json.JsonElement?) ?? throw new Exception("expected data field in auth token");
 
-            var p = ((System.Text.Json.JsonElement)encryptionToken.Paseto.Payload["data"]).GetString() ?? throw new Exception("auth token cannot be null");
+            var p = elem.GetString() ?? throw new Exception("auth token cannot be null");
 
             return JsonConvert.DeserializeObject<GameClientInfo>(p ?? throw new Exception("data cannot be null"));
         }
diff --git a/EpinelPS/LobbyServer/Simroom/GetSimRoomData.cs b/EpinelPS/LobbyServer/Simroom/GetSimRoomData.cs
index d9a778a..29d7189 100644
--- a/EpinelPS/LobbyServer/Simroom/GetSimRoomData.cs
+++ b/EpinelPS/LobbyServer/Simroom/GetSimRoomData.cs
@@ -9,6 +9,7 @@ namespace EpinelPS.LobbyServer.Simroom
         protected override async Task HandleAsync()
         {
             var req = await ReadData<ReqGetSimRoom>();
+            var user = GetUser();
 
             var response = new ResGetSimRoom
             {
@@ -55,6 +56,14 @@ namespace EpinelPS.LobbyServer.Simroom
                 NextLegacyBuffResetDate = Timestamp.FromDateTimeOffset(DateTime.UtcNow.AddDays(7))
             };
 
+            if (user.ResetableData.SimRoomData.Entered)
+            {
+                response.Status = SimRoomStatus.Progress;
+                
+                response.CurrentDifficulty = user.ResetableData.SimRoomData.CurrentDifficulty;
+            }
+
+
             await WriteDataAsync(response);
         }
     }
diff --git a/EpinelPS/LobbyServer/Simroom/Quit.cs b/EpinelPS/LobbyServer/Simroom/Quit.cs
new file mode 100644
index 0000000..f2af279
--- /dev/null
+++ b/EpinelPS/LobbyServer/Simroom/Quit.cs
@@ -0,0 +1,26 @@
+using EpinelPS.Utils;
+using EpinelPS.Database;
+
+namespace EpinelPS.LobbyServer.Simroom
+{
+    [PacketPath("/simroom/quit")]
+    public class Quit : LobbyMsgHandler
+    {
+        protected override async Task HandleAsync()
+        {
+            var req = await ReadData<ReqQuitSimRoom>();
+            var user = GetUser();
+
+            ResQuitSimRoom response = new()
+            {
+                Result = SimRoomResult.SimRoomResultSuccess,
+            };
+
+            user.ResetableData.SimRoomData.Entered = false;
+
+            JsonDb.Save();
+
+            await WriteDataAsync(response);
+        }
+    }
+}
\ No newline at end of file
diff --git a/EpinelPS/LobbyServer/Simroom/SelectDifficulty.cs b/EpinelPS/LobbyServer/Simroom/SelectDifficulty.cs
index 479158c..8ee5089 100644
--- a/EpinelPS/LobbyServer/Simroom/SelectDifficulty.cs
+++ b/EpinelPS/LobbyServer/Simroom/SelectDifficulty.cs
@@ -1,4 +1,5 @@
 using EpinelPS.Utils;
+using EpinelPS.Database;
 
 namespace EpinelPS.LobbyServer.Simroom
 {
@@ -8,12 +9,21 @@ namespace EpinelPS.LobbyServer.Simroom
         protected override async Task HandleAsync()
         {
             var req = await ReadData<ReqSelectSimRoomDifficulty>();
+            var user = GetUser();
 
-            ResSelectSimRoomDifficulty response = new ResSelectSimRoomDifficulty
+            ResSelectSimRoomDifficulty response = new()
             {
                 Result = SimRoomResult.SimRoomResultSuccess,
             };
 
+            user.ResetableData.SimRoomData.Entered = true;
+            user.ResetableData.SimRoomData.CurrentDifficulty = req.Difficulty;
+            user.ResetableData.SimRoomData.CurrentChapter = req.StartingChapter;
+
+            // TODO: generate buffs
+
+            JsonDb.Save();
+
             await WriteDataAsync(response);
         }
     }