diff --git a/Data/expansions/turtle/opcodes.json b/Data/expansions/turtle/opcodes.json
index da0efa4e..369ace2e 100644
--- a/Data/expansions/turtle/opcodes.json
+++ b/Data/expansions/turtle/opcodes.json
@@ -37,6 +37,7 @@
   "SMSG_ACCOUNT_DATA_TIMES": "0x209",
   "SMSG_UPDATE_OBJECT": "0x0A9",
   "SMSG_COMPRESSED_UPDATE_OBJECT": "0x1F6",
+  "SMSG_UNKNOWN_1F5": "0x1F5",
   "SMSG_MONSTER_MOVE_TRANSPORT": "0x2AE",
   "SMSG_SPLINE_MOVE_SET_WALK_MODE": "0x30D",
   "SMSG_SPLINE_MOVE_SET_RUN_MODE": "0x30E",
@@ -284,5 +285,6 @@
   "SMSG_AUCTION_OWNER_NOTIFICATION": "0x25E",
   "SMSG_AUCTION_BIDDER_NOTIFICATION": "0x260",
   "CMSG_AUCTION_LIST_BIDDER_ITEMS": "0x264",
-  "SMSG_AUCTION_BIDDER_LIST_RESULT": "0x265"
+  "SMSG_AUCTION_BIDDER_LIST_RESULT": "0x265",
+  "SMSG_UNKNOWN_319": "0x319"
 }
diff --git a/include/game/opcode_table.hpp b/include/game/opcode_table.hpp
index ab953e46..7b11516b 100644
--- a/include/game/opcode_table.hpp
+++ b/include/game/opcode_table.hpp
@@ -64,6 +64,7 @@ enum class LogicalOpcode : uint16_t {
     // ---- Entity/Object updates ----
     SMSG_UPDATE_OBJECT,
     SMSG_COMPRESSED_UPDATE_OBJECT,
+    SMSG_UNKNOWN_1F5,
     SMSG_MONSTER_MOVE_TRANSPORT,
     SMSG_SPLINE_MOVE_SET_WALK_MODE,
     SMSG_SPLINE_MOVE_SET_RUN_MODE,
@@ -440,6 +441,9 @@ enum class LogicalOpcode : uint16_t {
     SMSG_AUCTION_BIDDER_NOTIFICATION,
     CMSG_AUCTION_LIST_BIDDER_ITEMS,
 
+    // ---- Expansion-Specific / Unknown (safe consume) ----
+    SMSG_UNKNOWN_319,
+
     // Sentinel
     COUNT
 };
diff --git a/src/game/game_handler.cpp b/src/game/game_handler.cpp
index b54efd0f..f4d3adc1 100644
--- a/src/game/game_handler.cpp
+++ b/src/game/game_handler.cpp
@@ -914,6 +914,10 @@ void GameHandler::handlePacket(network::Packet& packet) {
                 handleCompressedUpdateObject(packet);
             }
             break;
+        case Opcode::SMSG_UNKNOWN_1F5:
+            // Observed custom server packet (16 bytes). Consume safely for stream alignment.
+            packet.setReadPos(packet.getSize());
+            break;
 
         case Opcode::SMSG_DESTROY_OBJECT:
             // Can be received after entering world
@@ -1000,6 +1004,11 @@ void GameHandler::handlePacket(network::Packet& packet) {
                 handleRandomRoll(packet);
             }
             break;
+        case Opcode::CMSG_DUEL_PROPOSED:
+            // Some servers reuse this wire value for an outbound server packet variant.
+            // Consume safely until we have a concrete parser.
+            packet.setReadPos(packet.getSize());
+            break;
 
         case Opcode::SMSG_LOGOUT_RESPONSE:
             handleLogoutResponse(packet);
@@ -2032,6 +2041,10 @@ void GameHandler::handlePacket(network::Packet& packet) {
         case Opcode::SMSG_AUCTION_COMMAND_RESULT:
             handleAuctionCommandResult(packet);
             break;
+        case Opcode::SMSG_UNKNOWN_319:
+            // Observed custom server packet (8 bytes). Safe-consume for now.
+            packet.setReadPos(packet.getSize());
+            break;
 
         default:
             // In pre-world states we need full visibility (char create/login handshakes).
diff --git a/src/game/opcode_table.cpp b/src/game/opcode_table.cpp
index a7024d12..8e1208d7 100644
--- a/src/game/opcode_table.cpp
+++ b/src/game/opcode_table.cpp
@@ -63,6 +63,7 @@ static const OpcodeNameEntry kOpcodeNames[] = {
     {"SMSG_MOTD", LogicalOpcode::SMSG_MOTD},
     {"SMSG_UPDATE_OBJECT", LogicalOpcode::SMSG_UPDATE_OBJECT},
     {"SMSG_COMPRESSED_UPDATE_OBJECT", LogicalOpcode::SMSG_COMPRESSED_UPDATE_OBJECT},
+    {"SMSG_UNKNOWN_1F5", LogicalOpcode::SMSG_UNKNOWN_1F5},
     {"SMSG_MONSTER_MOVE_TRANSPORT", LogicalOpcode::SMSG_MONSTER_MOVE_TRANSPORT},
     {"SMSG_SPLINE_MOVE_SET_WALK_MODE", LogicalOpcode::SMSG_SPLINE_MOVE_SET_WALK_MODE},
     {"SMSG_SPLINE_MOVE_SET_RUN_MODE", LogicalOpcode::SMSG_SPLINE_MOVE_SET_RUN_MODE},
@@ -360,6 +361,7 @@ static const OpcodeNameEntry kOpcodeNames[] = {
     {"SMSG_AUCTION_OWNER_NOTIFICATION", LogicalOpcode::SMSG_AUCTION_OWNER_NOTIFICATION},
     {"SMSG_AUCTION_BIDDER_NOTIFICATION", LogicalOpcode::SMSG_AUCTION_BIDDER_NOTIFICATION},
     {"CMSG_AUCTION_LIST_BIDDER_ITEMS", LogicalOpcode::CMSG_AUCTION_LIST_BIDDER_ITEMS},
+    {"SMSG_UNKNOWN_319", LogicalOpcode::SMSG_UNKNOWN_319},
 };
 // clang-format on