diff --git a/attach-user b/attach-user
new file mode 100755
index 00000000..7d999c17
--- /dev/null
+++ b/attach-user
@@ -0,0 +1,46 @@
+#!/usr/bin/env bash
+
+user=$USER
+
+if [ "$#" == 1 ]; then
+	user=$1
+fi
+
+proc="0"
+
+for pid in $(pidof hl2_linux)
+do
+	if sudo -H -u $user kill -0 $pid
+	then
+		proc=$pid
+		break
+	fi
+done
+
+
+if [ "$proc" == "0" ]
+then
+	echo "TF2 for $user is not running"
+	continue
+fi
+
+echo Attaching to "$proc"
+
+FILENAME=$(realpath "bin/libcathook.so")
+
+echo loading "$FILENAME" to "$proc"
+
+sudo killall -19 steam
+sudo killall -19 steamwebhelper
+
+sudo gdb -n -q -batch \
+  -ex "attach $proc" \
+  -ex "set \$dlopen = (void*(*)(char*, int)) dlopen" \
+  -ex "call \$dlopen(\"$FILENAME\", 1)" \
+  -ex "call dlerror()" \
+  -ex 'print (char *) $2' \
+  -ex "detach" \
+  -ex "quit"
+
+sudo killall -18 steamwebhelper
+sudo killall -18 steam
\ No newline at end of file
diff --git a/src/headshake.cpp b/src/headshake.cpp
new file mode 100644
index 00000000..8c8f28cb
--- /dev/null
+++ b/src/headshake.cpp
@@ -0,0 +1,12 @@
+/*
+ * headshake.cpp
+ *
+ *  Created on: Aug 2, 2017
+ *      Author: nullifiedcat
+ */
+
+#include <vector>
+
+const std::vector<float> headshake_pitch_deltas = {
+	-0.2, 0.8, -1.7, 0.8, -0.8, 0.19, -0.99, 1.9
+};
diff --git a/src/headshake.hpp b/src/headshake.hpp
new file mode 100644
index 00000000..6b61018d
--- /dev/null
+++ b/src/headshake.hpp
@@ -0,0 +1,12 @@
+/*
+ * headshake.hpp
+ *
+ *  Created on: Aug 2, 2017
+ *      Author: nullifiedcat
+ */
+
+#pragma once
+
+
+
+
diff --git a/src/helpers.cpp b/src/helpers.cpp
index bbd92ff3..e9434758 100644
--- a/src/helpers.cpp
+++ b/src/helpers.cpp
@@ -156,6 +156,7 @@ powerup_type GetPowerupOnPlayer(CachedEntity* player) {
 
 // A function to tell if a player is using a specific weapon
 bool HasWeapon(CachedEntity* ent, int wantedId) {
+	if (CE_BAD(ent)) return false;
 	// Create a var to store the handle
 	int *hWeapons;
 	// Grab the handle and store it into the var
@@ -172,6 +173,7 @@ bool HasWeapon(CachedEntity* ent, int wantedId) {
 }
 
 bool HasDarwins(CachedEntity* ent) {
+	if (CE_BAD(ent)) return false;
 	// Check if player is sniper
 	if (CE_INT(ent, netvar.iClass) != tf_sniper) return false;
 	// Check if player is using darwins, 231 is the id for darwins danger sheild
diff --git a/src/hooks/others.cpp b/src/hooks/others.cpp
index 089d706a..0176c423 100644
--- a/src/hooks/others.cpp
+++ b/src/hooks/others.cpp
@@ -225,10 +225,21 @@ bool SendNetMsg_hook(void* _this, INetMessage& msg, bool bForceReliable = false,
 	return false;
 }
 
+static CatVar die_if_vac(CV_SWITCH, "die_if_vac", "0", "Die if VAC banned");
+
 void Shutdown_hook(void* _this, const char* reason) {
 	// This is a INetChannel hook - it SHOULDN'T be static because netchannel changes.
 	const Shutdown_t original = (Shutdown_t)hooks::netchannel.GetMethod(offsets::Shutdown());
 	logging::Info("Disconnect: %s", reason);
+	if (strstr(reason, "VAC banned")) {
+		if (die_if_vac) {
+			logging::Info("VAC banned");
+			*(int*)0 = 0;
+			exit(1);
+		}
+	} else if (strstr(reason, "VAC")) {
+		logging::Info("VAC error?");
+	}
 #if IPC_ENABLED
 	ipc::UpdateServerAddress(true);
 #endif
diff --git a/src/interfaces.cpp b/src/interfaces.cpp
index 3b7061d9..0ea76c7c 100644
--- a/src/interfaces.cpp
+++ b/src/interfaces.cpp
@@ -86,12 +86,14 @@ void CreateInterfaces() {
 	HSteamPipe sp = g_ISteamClient->CreateSteamPipe();
 	HSteamUser su = g_ISteamClient->ConnectToGlobalUser(sp);
 	g_IVModelRender = BruteforceInterface<IVModelRender>("VEngineModel", sharedobj::engine(), 16);
+	g_ISteamFriends = nullptr;
 	IF_GAME (IsTF2()) {
 		uintptr_t sig_steamapi = gSignatures.GetEngineSignature("55 0F 57 C0 89 E5 83 EC 18 F3 0F 11 05 ? ? ? ? F3 0F 11 05 ? ? ? ? F3 0F 10 05 ? ? ? ? C7 04 24 ? ? ? ? F3 0F 11 05 ? ? ? ? F3 0F 11 05 ? ? ? ? E8 ? ? ? ? C7 44 24 08 ? ? ? ? C7 44 24 04 ? ? ? ? C7 04 24 ? ? ? ? E8 ? ? ? ? C9 C3");
 		logging::Info("SteamAPI: 0x%08x", sig_steamapi);
 		void** SteamAPI_engine = *reinterpret_cast<void***>(sig_steamapi + 36);
 		g_ISteamFriends = (ISteamFriends*)(SteamAPI_engine[1]);//
-	} else {
+	}
+	if (g_ISteamFriends == nullptr) {
 		// FIXME SIGNATURE
 		g_ISteamFriends = g_ISteamClient->GetISteamFriends(su, sp, "SteamFriends002");
 	}