diff --git a/common/connectionless_netmessages.proto b/common/connectionless_netmessages.proto
index 3e77132c..f447ab4b 100644
--- a/common/connectionless_netmessages.proto
+++ b/common/connectionless_netmessages.proto
@@ -1,4 +1,5 @@
 import "netmessages.proto";
+import "networkbasetypes.proto";
 
 message C2S_CONNECT_SameProcessCheck {
 	optional uint64 localhost_process_id = 1;
@@ -6,6 +7,8 @@ message C2S_CONNECT_SameProcessCheck {
 }
 
 message C2S_CONNECT_Message {
+	option (maximum_size_bytes) = 2400;
+
 	optional uint32 host_version = 1;
 	optional uint32 auth_protocol = 2;
 	optional uint32 challenge_number = 3;
diff --git a/common/netmessages.proto b/common/netmessages.proto
index 88130ad5..bd47d949 100644
--- a/common/netmessages.proto
+++ b/common/netmessages.proto
@@ -505,6 +505,10 @@ message ProtoFlattenedSerializerField_t {
 		optional int32 polymorphic_field_serializer_version = 2;
 	}
 
+	message proto_enum_info_t {
+		optional bool is_signed_enum = 1;
+	}
+
 	optional int32 var_type_sym = 1;
 	optional int32 var_name_sym = 2;
 	optional int32 bit_count = 3;
@@ -517,6 +521,7 @@ message ProtoFlattenedSerializerField_t {
 	optional int32 var_encoder_sym = 10;
 	repeated .ProtoFlattenedSerializerField_t.polymorphic_field_t polymorphic_types = 11;
 	optional int32 var_serializer_sym = 12;
+	optional .ProtoFlattenedSerializerField_t.proto_enum_info_t var_enum_info = 13;
 }
 
 message ProtoFlattenedSerializer_t {
@@ -525,12 +530,22 @@ message ProtoFlattenedSerializer_t {
 	repeated int32 fields_index = 3;
 }
 
+message ProtoCoordSizeParams_t {
+	optional int32 coord_integer_bits = 1;
+	optional int32 coord_fractional_bits = 2;
+	optional int32 coord_integer_bits_mp = 3;
+	optional int32 coord_fractional_bits_mp = 4;
+	optional int32 normal_fractional_bits = 5;
+	optional int32 angle_bits = 6;
+}
+
 message CSVCMsg_FlattenedSerializer {
 	option (maximum_size_bytes) = 0;
 
 	repeated .ProtoFlattenedSerializer_t serializers = 1;
 	repeated string symbols = 2;
 	repeated .ProtoFlattenedSerializerField_t fields = 3;
+	optional .ProtoCoordSizeParams_t coord_size_params = 4;
 }
 
 message CSVCMsg_StopSound {
@@ -650,6 +665,7 @@ message CMsgServerUserCmd {
 	optional int32 server_tick_executed = 4;
 	optional int32 client_tick = 5;
 	optional bytes delta_data = 6;
+	optional bool delta_processed = 7;
 }
 
 message CSVCMsg_UserCommands {
diff --git a/common/networkbasetypes.proto b/common/networkbasetypes.proto
index 59d15d5c..599feac4 100644
--- a/common/networkbasetypes.proto
+++ b/common/networkbasetypes.proto
@@ -101,6 +101,8 @@ message CMsgPlayerInfo {
 	optional fixed64 steamid = 4;
 	optional bool fakeplayer = 5;
 	optional bool ishltv = 6;
+	optional bool clan_member = 9;
+	optional bool clan_officer = 10;
 }
 
 message CEntityMsg {
@@ -231,6 +233,15 @@ message CNETMsg_SpawnGroup_LoadCompleted {
 	optional uint32 spawngrouphandle = 1;
 }
 
+message QuantizedFloatEncoderAlias_t {
+	optional string name = 1;
+	optional int32 bit_count = 2;
+	optional int32 encode_flags = 3;
+	optional float min_value = 4;
+	optional float max_value = 5;
+	optional bool validate = 6;
+}
+
 message CSVCMsg_GameSessionConfiguration {
 	optional bool is_multiplayer = 1;
 	optional bool is_loadsavegame = 2;
@@ -251,6 +262,8 @@ message CSVCMsg_GameSessionConfiguration {
 	optional bool is_transition = 16;
 	optional string previouslevel = 17;
 	optional string landmarkname = 18;
+	repeated .QuantizedFloatEncoderAlias_t quantized_float_encoder_aliases = 20;
+	optional float max_coord = 21;
 }
 
 message CNETMsg_DebugOverlay {
diff --git a/common/source2_steam_stats.proto b/common/source2_steam_stats.proto
index 47c4bacc..89e923c4 100644
--- a/common/source2_steam_stats.proto
+++ b/common/source2_steam_stats.proto
@@ -108,6 +108,18 @@ message CMsgSource2NetworkFlowQuality {
 	optional uint32 net_ping_p5 = 80;
 	optional uint32 net_ping_p50 = 81;
 	optional uint32 net_ping_p95 = 82;
+	optional uint32 msgproc_usec_p50 = 90;
+	optional uint32 msgproc_usec_p95 = 91;
+	optional uint32 msgproc_usec_p99 = 92;
+	optional uint32 msgproc_usec_max = 93;
+	optional uint32 msgproc_usec_avg_p50 = 94;
+	optional uint32 msgproc_usec_avg_p95 = 95;
+	optional uint32 msgproc_usec_avg_p99 = 96;
+	optional uint32 msgproc_usec_avg_max = 97;
+	optional uint32 queuedmsgs_p50 = 100;
+	optional uint32 queuedmsgs_p95 = 101;
+	optional uint32 queuedmsgs_p99 = 102;
+	optional uint32 queuedmsgs_max = 103;
 }
 
 message CMsgSource2PerfIntervalSample {
diff --git a/game/shared/cstrike15/cstrike15_gcmessages.proto b/game/shared/cstrike15/cstrike15_gcmessages.proto
index e9c35411..1af2ac6f 100644
--- a/game/shared/cstrike15/cstrike15_gcmessages.proto
+++ b/game/shared/cstrike15/cstrike15_gcmessages.proto
@@ -552,6 +552,7 @@ message CMsgGCCStrike15_v2_MatchmakingGC2ServerReserve {
 	optional uint32 socache_control = 20;
 	repeated int32 teammate_colors = 21;
 	optional uint32 match_id_additional = 22;
+	repeated string clan_tags = 23;
 }
 
 message CMsgGCCStrike15_v2_MatchmakingServerReservationResponse {
@@ -942,7 +943,7 @@ message CEconItemPreviewDataBlock {
 	optional uint32 paintseed = 8;
 	optional uint32 killeaterscoretype = 9;
 	optional uint32 killeatervalue = 10;
-	optional string customname = 11;
+	repeated string customnames = 11;
 	repeated .CEconItemPreviewDataBlock.Sticker stickers = 12;
 	optional uint32 inventory = 13;
 	optional uint32 origin = 14;
@@ -955,6 +956,8 @@ message CEconItemPreviewDataBlock {
 	optional uint32 style = 21;
 	repeated .CEconItemPreviewDataBlock.Sticker variations = 22;
 	optional uint32 upgrade_level = 23;
+	optional uint32 pet_food_expiration_date = 24;
+	optional bytes blobdata = 25;
 }
 
 message CMsgGCCStrike15_v2_MatchEndRewardDropsNotification {
@@ -1249,6 +1252,7 @@ message CSOPersonaDataPublic {
 	optional uint32 xp_trail_timestamp_refresh = 4;
 	optional uint32 xp_trail_level = 5;
 	optional uint32 clan_id = 6;
+	optional string clan_tag = 7;
 }
 
 message CSOAccountRecurringMission {
diff --git a/game/shared/usermessages.proto b/game/shared/usermessages.proto
index 8493ebb3..ff197983 100644
--- a/game/shared/usermessages.proto
+++ b/game/shared/usermessages.proto
@@ -51,6 +51,8 @@ enum EBaseUserMessages {
 	UM_PlayResponseConditional = 166;
 	UM_UserSentBugBug = 167;
 	UM_UsageReport = 168;
+	UM_RemoteServerCommand = 169;
+	UM_RemoteServerResponse = 170;
 	UM_MAX_BASE = 200;
 }
 
@@ -857,3 +859,27 @@ message CUserMessage_PlayResponseConditional {
 message CUserMessage_UsageReport {
 	optional string usage = 1;
 }
+
+message CUserMessage_RemoteServerCommand {
+	enum ECommand {
+		ECommandChangeConVar = 1;
+	}
+
+	optional .CUserMessage_RemoteServerCommand.ECommand command = 1 [default = ECommandChangeConVar];
+	optional string convar = 2;
+	optional string value = 3;
+}
+
+message CUserMessageRemoteServerResponse {
+	enum ECommandResult {
+		EResultSuccess = 1;
+		EResultServerDoesntAllow = 2;
+		EResultClientNotAuthenticated = 3;
+		EResultClientNotAllowed = 4;
+		EResultCommandNotAllowed = 5;
+	}
+
+	optional .CUserMessageRemoteServerResponse.ECommandResult command_result = 1 [default = EResultSuccess];
+	optional string convar = 2;
+	optional string results = 3;
+}
diff --git a/gcsdk/gcsystemmsgs.proto b/gcsdk/gcsystemmsgs.proto
index 8dadcb8c..15740c02 100644
--- a/gcsdk/gcsystemmsgs.proto
+++ b/gcsdk/gcsystemmsgs.proto
@@ -91,6 +91,13 @@ enum EGCSystemMsg {
 	k_EGCMsgRecurringSubscriptionStatusChange = 530;
 	k_EGCMsgDirectServiceMethod = 531;
 	k_EGCMsgDirectServiceMethodResponse = 532;
+	k_EGCMsgAppCheersReceived = 533;
+	k_EGCMsgAppCheersGetAllowedTypes = 534;
+	k_EGCMsgAppCheersGetAllowedTypesResponse = 535;
+	k_EGCMsgReportMetrics = 536;
+	k_EGCMsgReportMetricsResponse = 537;
+	k_EGCMsgGetClanDetails = 538;
+	k_EGCMsgGetClanDetailsResponse = 539;
 }
 
 enum ESOMsg {