diff --git a/DDApp/DDApplication/MainWindow.axaml b/DDApp/DDApplication/MainWindow.axaml
index 9aa11a1..5fa7007 100644
--- a/DDApp/DDApplication/MainWindow.axaml
+++ b/DDApp/DDApplication/MainWindow.axaml
@@ -10,6 +10,7 @@
         <StackPanel Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="3" Orientation="Horizontal" Spacing="8">
             <Button x:Name="StartButton" Content="Start Bot" Width="120"/>
             <Button x:Name="StopButton" Content="Stop Bot" Width="120" IsEnabled="False"/>
+            <CheckBox x:Name="MultiplayerCheckBox" Content="Multiplayer" VerticalAlignment="Center"/>
             <TextBlock Text="API Key:" VerticalAlignment="Center"/>
             <TextBox x:Name="ApiKeyBox" Width="360" Watermark="GUID player token"/>
             <TextBlock x:Name="StatusText" VerticalAlignment="Center" Text="Idle"/>
diff --git a/DDApp/DDApplication/MainWindow.axaml.cs b/DDApp/DDApplication/MainWindow.axaml.cs
index f5f69b6..4e7ad8e 100644
--- a/DDApp/DDApplication/MainWindow.axaml.cs
+++ b/DDApp/DDApplication/MainWindow.axaml.cs
@@ -32,6 +32,7 @@ public partial class MainWindow : Window
     };
 
     private readonly string _configuredApiKey = Program.Configuration["APIKEY"] ?? string.Empty;
+    private readonly bool _multiplayerModeDefault = bool.TryParse(Program.Configuration["MULTIPLAYER"], out var multiplayer) && multiplayer;
     private readonly HttpClient _httpClient = new() { Timeout = TimeSpan.FromSeconds(8) };
     private readonly DigitalDojoApiClient _client;
     private readonly ObservableCollection<string> _logEntries = [];
@@ -85,6 +86,7 @@ public partial class MainWindow : Window
         BuildKnowledgeGrid();
 
         ApiKeyBox.Text = _configuredApiKey;
+        MultiplayerCheckBox.IsChecked = _multiplayerModeDefault;
         LogList.ItemsSource = _logEntries;
 
         StartButton.Click += async (_, _) => await StartBotAsync();
@@ -122,6 +124,7 @@ public partial class MainWindow : Window
         StartButton.IsEnabled = false;
         StopButton.IsEnabled = true;
         ApiKeyBox.IsEnabled = false;
+        MultiplayerCheckBox.IsEnabled = false;
 
         ResetKnowledgeState();
 
@@ -185,6 +188,7 @@ public partial class MainWindow : Window
         StartButton.IsEnabled = true;
         StopButton.IsEnabled = false;
         ApiKeyBox.IsEnabled = true;
+        MultiplayerCheckBox.IsEnabled = true;
         SetStatus("Stopped.");
     }
 
@@ -211,6 +215,13 @@ public partial class MainWindow : Window
             return false;
         }
 
+        if (IsMultiplayerMode)
+        {
+            // In multiplayer, the lobby controls game creation/start.
+            AppendLog("Multiplayer mode enabled; waiting for lobby game start (no create call).");
+            return true;
+        }
+
         try
         {
             var created = await _client.CreateAsync(_playerToken, ct);
@@ -501,6 +512,12 @@ public partial class MainWindow : Window
              // Teleport closer to enemy for aggressive positioning
              var moveTowardX = targetX > 0 ? targetX - 1 : targetX + 1;
              var moveTowardY = targetY > 0 ? targetY - 1 : targetY + 1;
+             var teleportDirection = DirectionFromVector(moveTowardX, moveTowardY);
+             if (IsDirectionUnsafeForHighSpeedMove(teleportDirection))
+             {
+                 moveTowardX = targetX;
+                 moveTowardY = targetY;
+             }
 
              return new BotDecision(
                  "teleport-aggro",
@@ -509,16 +526,26 @@ public partial class MainWindow : Window
                  {
                      var response = await _client.TeleportAsync(_playerToken, moveTowardX, moveTowardY, ct);
                      MarkUsed(BotAction.Teleport);
-                     if (response.Executed)
+                     if (response.Executed && !response.LandedInWall)
                      {
                          _x = moveTowardX;
                          _y = moveTowardY;
                      }
+
+                     if (response.LandedInWall)
+                     {
+                         var dir = DirectionFromVector(moveTowardX, moveTowardY);
+                         _blockedDirectionTicks.TryGetValue(dir, out var blocked);
+                         _blockedDirectionTicks[dir] = Math.Max(blocked, 14);
+                         _survivalTicks = Math.Max(_survivalTicks, 10);
+                         _sessionLogger?.LogEvent("teleport-wall", $"x={moveTowardX};y={moveTowardY}");
+                     }
+
                      return response.Executed;
                  });
          }
 
-            if (Ready(BotAction.Dash) && TryGetAggressiveDashDirection(predictedEnemy, bestSight, out var dashDirection, out var dashReason))
+            if (Ready(BotAction.Dash) && TryGetAggressiveDashDirection(predictedEnemy, bestSight.Key, bestSight.Value, out var dashDirection, out var dashReason))
           {
               return new BotDecision(
                   "dash-aggro",
@@ -529,7 +556,19 @@ public partial class MainWindow : Window
                       MarkUsed(BotAction.Dash);
                       if (response.Executed)
                       {
-                          ApplyMovement(dashDirection, Math.Max(response.BlocksDashed, 1));
+                          var movedBlocks = Math.Max(response.BlocksDashed, 0);
+                          if (movedBlocks > 0)
+                          {
+                              ApplyMovement(dashDirection, movedBlocks);
+                          }
+
+                          if (response.DamageTaken > 0)
+                          {
+                              _blockedDirectionTicks.TryGetValue(dashDirection, out var blocked);
+                              _blockedDirectionTicks[dashDirection] = Math.Max(blocked, 12);
+                              _survivalTicks = Math.Max(_survivalTicks, 8);
+                              _sessionLogger?.LogEvent("dash-self-damage", $"dir={dashDirection};damage={response.DamageTaken};blocks={response.BlocksDashed}");
+                          }
                       }
 
                       return response.Executed;
@@ -581,7 +620,20 @@ public partial class MainWindow : Window
                          MarkUsed(BotAction.Dash);
                          if (response.Executed)
                          {
-                             ApplyMovement(retreatDirection, Math.Max(response.BlocksDashed, 1));
+                             var movedBlocks = Math.Max(response.BlocksDashed, 0);
+                             if (movedBlocks > 0)
+                             {
+                                 ApplyMovement(retreatDirection, movedBlocks);
+                             }
+
+                             if (response.DamageTaken > 0)
+                             {
+                                 _blockedDirectionTicks.TryGetValue(retreatDirection, out var blocked);
+                                 _blockedDirectionTicks[retreatDirection] = Math.Max(blocked, 12);
+                                 _survivalTicks = Math.Max(_survivalTicks, 10);
+                                 _sessionLogger?.LogEvent("dash-self-damage", $"dir={retreatDirection};damage={response.DamageTaken};blocks={response.BlocksDashed}");
+                             }
+
                              _escapeDirection = retreatDirection;
                              _escapeLockTicks = Math.Max(_escapeLockTicks, EscapeLockTicks(profile));
                          }
@@ -1025,7 +1077,8 @@ public partial class MainWindow : Window
 
       private bool TryGetAggressiveDashDirection(
           (int X, int Y)? predictedEnemy,
-            KeyValuePair<Direction, PeekEntitiesAsyncResponse>? bestSight,
+          Direction? sightDirection,
+          PeekEntitiesAsyncResponse? sightResponse,
           out Direction direction,
           out string reason)
       {
@@ -1033,20 +1086,24 @@ public partial class MainWindow : Window
           {
               var target = predictedEnemy ?? _nearestEnemy.Value;
               var dist = Math.Abs(target.X) + Math.Abs(target.Y);
-              if (dist >= 2 && dist <= 6)
+              if (dist >= 2 && dist <= 4)
               {
-                  direction = DirectionFromVector(target.X, target.Y);
-                  reason = $"Aggressive gap-close toward enemy at {direction} (predicted distance {dist}).";
-                  return true;
+                  var candidate = DirectionFromVector(target.X, target.Y);
+                  if (!IsDirectionUnsafeForHighSpeedMove(candidate))
+                  {
+                      direction = candidate;
+                      reason = $"Aggressive gap-close toward enemy at {direction} (predicted distance {dist}).";
+                      return true;
+                  }
               }
           }
 
-          if (bestSight.HasValue && bestSight.Value.Value.Executed && bestSight.Value.Value.PlayersInSight > 0)
+          if (sightDirection.HasValue && sightResponse is not null && sightResponse.Executed && sightResponse.PlayersInSight > 0)
           {
-              var dist = bestSight.Value.Value.SightedPlayerDistance ?? 99;
-              if (dist >= 2 && dist <= 5)
+              var dist = sightResponse.SightedPlayerDistance ?? 99;
+              if (dist >= 2 && dist <= 4 && !IsDirectionUnsafeForHighSpeedMove(sightDirection.Value))
               {
-                  direction = bestSight.Value.Key;
+                  direction = sightDirection.Value;
                   reason = $"Enemy visible at {direction} ({dist} dist); dash to force close-range combat.";
                   return true;
               }
@@ -1057,6 +1114,16 @@ public partial class MainWindow : Window
           return false;
       }
 
+    private bool IsDirectionUnsafeForHighSpeedMove(Direction direction)
+    {
+        if (_blockedDirectionTicks.TryGetValue(direction, out var blocked) && blocked > 0)
+        {
+            return true;
+        }
+
+        return DeathHeatFor(direction) >= 4.0;
+    }
+
     private void MarkVisit(int x, int y, double amount)
     {
         var key = (x, y);
@@ -1209,6 +1276,8 @@ public partial class MainWindow : Window
         Dispatcher.UIThread.Post(() => StatusText.Text = text);
     }
 
+    private bool IsMultiplayerMode => MultiplayerCheckBox.IsChecked == true;
+
     private void AppendLog(string message)
     {
         Dispatcher.UIThread.Post(() =>