diff --git a/rehlds/engine/pr_cmds.cpp b/rehlds/engine/pr_cmds.cpp
index 82ff324..909f053 100644
--- a/rehlds/engine/pr_cmds.cpp
+++ b/rehlds/engine/pr_cmds.cpp
@@ -961,8 +961,13 @@ edict_t* EXT_FUNC CreateNamedEntity(int className)
 	}
 }
 
+void PF_Remove_I(edict_t *ed)
+{
+	g_RehldsHookchains.m_PF_Remove_I.callChain(PF_Remove_I_internal, ed);
+}
+
 /* <7941a> ../engine/pr_cmds.c:1253 */
-void EXT_FUNC PF_Remove_I(edict_t *ed)
+void EXT_FUNC PF_Remove_I_internal(edict_t *ed)
 {
 	ED_Free(ed);
 }
@@ -1172,8 +1177,18 @@ short unsigned int EXT_FUNC EV_Precache(int type, const char *psz)
 	}
 }
 
+void EXT_FUNC EV_PlayReliableEvent_api(IGameClient *cl, int entindex, short unsigned int eventindex, float delay, event_args_t *pargs)
+{
+	EV_PlayReliableEvent_internal(cl->GetClient(), entindex, eventindex, delay, pargs);
+}
+
+void EV_PlayReliableEvent(client_t *cl, int entindex, short unsigned int eventindex, float delay, event_args_t *pargs)
+{
+	g_RehldsHookchains.m_EV_PlayReliableEvent.callChain(EV_PlayReliableEvent_api, GetRehldsApiClient(cl), entindex, eventindex, delay, pargs);
+}
+
 /* <796ae> ../engine/pr_cmds.c:1531 */
-void EXT_FUNC EV_PlayReliableEvent(client_t *cl, int entindex, short unsigned int eventindex, float delay, event_args_t *pargs)
+void EV_PlayReliableEvent_internal(client_t *cl, int entindex, short unsigned int eventindex, float delay, event_args_t *pargs)
 {
 //	unsigned char data;                                           //  1533
 //	sizebuf_t msg;                                                //  1534
@@ -2546,8 +2561,13 @@ const char* EXT_FUNC PF_GetPlayerAuthId(edict_t *e)
 	return szAuthID[count];
 }
 
+void PF_BuildSoundMsg_I(edict_t *entity, int channel, const char *sample, float volume, float attenuation, int fFlags, int pitch, int msg_dest, int msg_type, const float *pOrigin, edict_t *ed)
+{
+	g_RehldsHookchains.m_PF_BuildSoundMsg_I.callChain(PF_BuildSoundMsg_I_internal, entity, channel, sample, volume, attenuation, fFlags, pitch, msg_dest, msg_type, pOrigin, ed);
+}
+
 /* <7a902> ../engine/pr_cmds.c:3229 */
-void EXT_FUNC PF_BuildSoundMsg_I(edict_t *entity, int channel, const char *sample, float volume, float attenuation, int fFlags, int pitch, int msg_dest, int msg_type, const float *pOrigin, edict_t *ed)
+void EXT_FUNC PF_BuildSoundMsg_I_internal(edict_t *entity, int channel, const char *sample, float volume, float attenuation, int fFlags, int pitch, int msg_dest, int msg_type, const float *pOrigin, edict_t *ed)
 {
 	PF_MessageBegin_I(msg_dest, msg_type, pOrigin, ed);
 	SV_BuildSoundMsg(entity, channel, sample, (int)volume, attenuation, fFlags, pitch, pOrigin, &gMsgBuffer);
diff --git a/rehlds/engine/pr_cmds.h b/rehlds/engine/pr_cmds.h
index 9b7d8d5..6363661 100644
--- a/rehlds/engine/pr_cmds.h
+++ b/rehlds/engine/pr_cmds.h
@@ -136,6 +136,7 @@ edict_t *FindEntityInSphere(edict_t *pEdictStartSearchAfter, const float *org, f
 edict_t *PF_Spawn_I(void);
 edict_t *CreateNamedEntity(int className);
 void PF_Remove_I(edict_t *ed);
+void PF_Remove_I_internal(edict_t *ed);
 edict_t *PF_find_Shared(int eStartSearchAfter, int iFieldToMatch, const char *szValueToFind);
 int iGetIndex(const char *pszField);
 edict_t *FindEntityByString(edict_t *pEdictStartSearchAfter, const char *pszField, const char *pszValue);
@@ -143,7 +144,9 @@ int GetEntityIllum(edict_t *pEnt);
 qboolean PR_IsEmptyString(const char *s);
 int PF_precache_sound_I(const char *s);
 short unsigned int EV_Precache(int type, const char *psz);
+void EV_PlayReliableEvent_api(IGameClient *cl, int entindex, short unsigned int eventindex, float delay, event_args_t *pargs);
 void EV_PlayReliableEvent(client_t *cl, int entindex, short unsigned int eventindex, float delay, event_args_t *pargs);
+void EV_PlayReliableEvent_internal(client_t *cl, int entindex, short unsigned int eventindex, float delay, event_args_t *pargs);
 void EV_Playback(int flags, const edict_t *pInvoker, short unsigned int eventindex, float delay, float *origin, float *angles, float fparam1, float fparam2, int iparam1, int iparam2, int bparam1, int bparam2);
 void EV_SV_Playback(int flags, int clientindex, short unsigned int eventindex, float delay, float *origin, float *angles, float fparam1, float fparam2, int iparam1, int iparam2, int bparam1, int bparam2);
 int PF_precache_model_I(const char *s);
@@ -194,6 +197,7 @@ int PF_GetPlayerUserId(edict_t *e);
 unsigned int PF_GetPlayerWONId(edict_t *e);
 const char *PF_GetPlayerAuthId(edict_t *e);
 void PF_BuildSoundMsg_I(edict_t *entity, int channel, const char *sample, float volume, float attenuation, int fFlags, int pitch, int msg_dest, int msg_type, const float *pOrigin, edict_t *ed);
+void PF_BuildSoundMsg_I_internal(edict_t *entity, int channel, const char *sample, float volume, float attenuation, int fFlags, int pitch, int msg_dest, int msg_type, const float *pOrigin, edict_t *ed);
 int PF_IsDedicatedServer(void);
 const char *PF_GetPhysicsInfoString(const edict_t *pClient);
 const char *PF_GetPhysicsKeyValue(const edict_t *pClient, const char *key);
diff --git a/rehlds/engine/server.h b/rehlds/engine/server.h
index 983694e..3a205c3 100644
--- a/rehlds/engine/server.h
+++ b/rehlds/engine/server.h
@@ -610,6 +610,7 @@ void SV_CountProxies(int *proxies);
 void SV_FindModelNumbers(void);
 void SV_StartParticle(const vec_t *org, const vec_t *dir, int color, int count);
 void SV_StartSound(int recipients, edict_t *entity, int channel, const char *sample, int volume, float attenuation, int fFlags, int pitch);
+void SV_StartSound_internal(int recipients, edict_t *entity, int channel, const char *sample, int volume, float attenuation, int fFlags, int pitch);
 qboolean SV_BuildSoundMsg(edict_t *entity, int channel, const char *sample, int volume, float attenuation, int fFlags, int pitch, const float *origin, sizebuf_t *buffer);
 int SV_HashString(const char *string, int iBounds);
 int SV_LookupSoundIndex(const char *sample);
@@ -689,6 +690,7 @@ void SV_CheckTimeouts(void);
 int SV_CalcPing(client_t *cl);
 void SV_FullClientUpdate(client_t *cl, sizebuf_t *sb);
 void SV_EmitEvents(client_t *cl, packet_entities_t *pack, sizebuf_t *msg);
+void SV_EmitEvents_internal(client_t *cl, packet_entities_t *pack, sizebuf_t *msg);
 void SV_AddToFatPVS(vec_t *org, mnode_t *node);
 unsigned char *SV_FatPVS(float *org);
 void SV_AddToFatPAS(vec_t *org, mnode_t *node);
diff --git a/rehlds/engine/sv_main.cpp b/rehlds/engine/sv_main.cpp
index 4490663..4554184 100644
--- a/rehlds/engine/sv_main.cpp
+++ b/rehlds/engine/sv_main.cpp
@@ -730,8 +730,13 @@ void SV_StartParticle(const vec_t *org, const vec_t *dir, int color, int count)
 	}
 }
 
-/* <a6df2> ../engine/sv_main.c:887 */
 void SV_StartSound(int recipients, edict_t *entity, int channel, const char *sample, int volume, float attenuation, int fFlags, int pitch)
+{
+	g_RehldsHookchains.m_SV_StartSound.callChain(SV_StartSound_internal, recipients, entity, channel, sample, volume, attenuation, fFlags, pitch);
+}
+
+/* <a6df2> ../engine/sv_main.c:887 */
+void EXT_FUNC SV_StartSound_internal(int recipients, edict_t *entity, int channel, const char *sample, int volume, float attenuation, int fFlags, int pitch)
 {
 	vec3_t origin;
 
@@ -3719,8 +3724,18 @@ void SV_FullClientUpdate(client_t *cl, sizebuf_t *sb)
 	MSG_WriteBuf(sb, sizeof(digest), digest);
 }
 
+void EXT_FUNC SV_EmitEvents_api(IGameClient *cl, packet_entities_t *pack, sizebuf_t *ms)
+{
+	SV_EmitEvents_internal(cl->GetClient(), pack, ms);
+}
+
+void SV_EmitEvents(client_t *cl, packet_entities_t *pack, sizebuf_t *ms)
+{
+	g_RehldsHookchains.m_SV_EmitEvents.callChain(SV_EmitEvents_api, GetRehldsApiClient(cl), pack, ms);
+}
+
 /* <a8995> ../engine/sv_main.c:5027 */
-void SV_EmitEvents(client_t *cl, packet_entities_t *pack, sizebuf_t *msg)
+void SV_EmitEvents_internal(client_t *cl, packet_entities_t *pack, sizebuf_t *msg)
 {
 	int i;
 	int ev;
diff --git a/rehlds/public/rehlds/hookchains.h b/rehlds/public/rehlds/hookchains.h
index 52f15c7..3906fcc 100644
--- a/rehlds/public/rehlds/hookchains.h
+++ b/rehlds/public/rehlds/hookchains.h
@@ -45,6 +45,7 @@ public:
 	typedef t_ret(*hookfunc_t)(IHookChain<t_ret, t_args...>*, t_args...);
 
 	virtual void registerHook(hookfunc_t hook) = 0;
+	virtual void unregisterHook(hookfunc_t hook) = 0;
 };
 
 
@@ -64,4 +65,5 @@ public:
 	typedef void(*hookfunc_t)(IVoidHookChain<t_args...>*, t_args...);
 
 	virtual void registerHook(hookfunc_t hook) = 0;
+	virtual void unregisterHook(hookfunc_t hook) = 0;
 };
diff --git a/rehlds/public/rehlds/rehlds_api.h b/rehlds/public/rehlds/rehlds_api.h
index f795c77..b25364b 100644
--- a/rehlds/public/rehlds/rehlds_api.h
+++ b/rehlds/public/rehlds/rehlds_api.h
@@ -117,6 +117,26 @@ typedef IVoidHookChainRegistry<model_t*, void*> IRehldsHookRegistry_Mod_LoadBrus
 typedef IVoidHookChain<model_t*, void*> IRehldsHook_Mod_LoadStudioModel;
 typedef IVoidHookChainRegistry<model_t*, void*> IRehldsHookRegistry_Mod_LoadStudioModel;
 
+//SV_EmitEvents hook
+typedef IVoidHookChain<IGameClient *, packet_entities_t *, sizebuf_t *> IRehldsHook_SV_EmitEvents;
+typedef IVoidHookChainRegistry<IGameClient *, packet_entities_t *, sizebuf_t *> IRehldsHookRegistry_SV_EmitEvents;
+
+//EV_PlayReliableEvent hook
+typedef IVoidHookChain<IGameClient *, int, short unsigned int, float, event_args_t *> IRehldsHook_EV_PlayReliableEvent;
+typedef IVoidHookChainRegistry<IGameClient *, int, short unsigned int, float, event_args_t *> IRehldsHookRegistry_EV_PlayReliableEvent;
+
+//SV_StartSound hook
+typedef IVoidHookChain<int , edict_t *, int, const char *, int, float, int, int> IRehldsHook_SV_StartSound;
+typedef IVoidHookChainRegistry<int , edict_t *, int, const char *, int, float, int, int> IRehldsHookRegistry_SV_StartSound;
+
+//PF_Remove_I hook
+typedef IVoidHookChain<edict_t *> IRehldsHook_PF_Remove_I;
+typedef IVoidHookChainRegistry<edict_t *> IRehldsHookRegistry_PF_Remove_I;
+
+//PF_BuildSoundMsg_I hook
+typedef IVoidHookChain<edict_t *, int, const char *, float, float, int, int, int, int, const float *, edict_t *> IRehldsHook_PF_BuildSoundMsg_I;
+typedef IVoidHookChainRegistry<edict_t *, int, const char *, float, float, int, int, int, int, const float *, edict_t *> IRehldsHookRegistry_PF_BuildSoundMsg_I;
+
 class IRehldsHookchains {
 public:
 	virtual ~IRehldsHookchains() { }
@@ -141,6 +161,11 @@ public:
 	virtual IRehldsHookRegistry_Mod_LoadBrushModel* Mod_LoadBrushModel() = 0;
 	virtual IRehldsHookRegistry_Mod_LoadStudioModel* Mod_LoadStudioModel() = 0;
 	virtual IRehldsHookRegistry_ExecuteServerStringCmd* ExecuteServerStringCmd() = 0;
+	virtual IRehldsHookRegistry_SV_EmitEvents* SV_EmitEvents() = 0;
+	virtual IRehldsHookRegistry_EV_PlayReliableEvent* EV_PlayReliableEvent() = 0;
+	virtual IRehldsHookRegistry_SV_StartSound* SV_StartSound() = 0;
+	virtual IRehldsHookRegistry_PF_Remove_I* PF_Remove_I() = 0;
+	virtual IRehldsHookRegistry_PF_BuildSoundMsg_I* PF_BuildSoundMsg_I() = 0;
 };
 
 struct RehldsFuncs_t {
@@ -166,6 +191,14 @@ struct RehldsFuncs_t {
 	int*(*GetMsgBadRead)();
 	cmd_source_t*(*GetCmdSource)();
 	void(*Log)(const char* prefix, const char* msg);
+	DLL_FUNCTIONS *(*GetEntityInterface)();
+	void(*EV_PlayReliableEvent)(IGameClient *cl, int entindex, short unsigned int eventindex, float delay, event_args_t *pargs);
+	int(*SV_LookupSoundIndex)(const char *sample);
+	void(*MSG_StartBitWriting)(sizebuf_t *buf);
+	void(*MSG_WriteBits)(uint32 data, int numbits);
+	void(*MSG_WriteBitVec3Coord)(const float *fa);
+	void(*MSG_EndBitWriting)(sizebuf_t *buf);
+	void*(*SZ_GetSpace)(sizebuf_t *buf, int length);
 };
 
 class IRehldsApi {
diff --git a/rehlds/rehlds/hookchains_impl.cpp b/rehlds/rehlds/hookchains_impl.cpp
index 7ef5c90..1553380 100644
--- a/rehlds/rehlds/hookchains_impl.cpp
+++ b/rehlds/rehlds/hookchains_impl.cpp
@@ -50,4 +50,17 @@ void AbstractHookChainRegistry::addHook(void* hookFunc) {
 	}
 
 	m_Hooks[m_NumHooks++] = hookFunc;
-}
\ No newline at end of file
+}
+
+void AbstractHookChainRegistry::removeHook(void* hookFunc) {
+
+	// erase hook
+	for (int i = 0; i < m_NumHooks; i++) {
+		if (hookFunc == m_Hooks[i]) {
+			if(--m_NumHooks != i)
+				memmove(&m_Hooks[i], &m_Hooks[i + 1], (m_NumHooks - i) * sizeof(m_Hooks[0]));
+
+			return;
+		}
+	}
+}
diff --git a/rehlds/rehlds/hookchains_impl.h b/rehlds/rehlds/hookchains_impl.h
index 34bf8d2..efee471 100644
--- a/rehlds/rehlds/hookchains_impl.h
+++ b/rehlds/rehlds/hookchains_impl.h
@@ -122,6 +122,7 @@ protected:
 
 protected:
 	void addHook(void* hookFunc);
+	void removeHook(void* hookFunc);
 
 public:
 	AbstractHookChainRegistry();
@@ -144,6 +145,9 @@ public:
 	virtual void registerHook(hookfunc_t hook) {
 		addHook((void*)hook);
 	}
+	virtual void unregisterHook(hookfunc_t hook) {
+		removeHook((void*)hook);
+	}
 };
 
 template<typename ...t_args>
@@ -163,4 +167,7 @@ public:
 	virtual void registerHook(hookfunc_t hook) {
 		addHook((void*)hook);
 	}
+	virtual void unregisterHook(hookfunc_t hook) {
+		removeHook((void*)hook);
+	}
 };
diff --git a/rehlds/rehlds/rehlds_api_impl.cpp b/rehlds/rehlds/rehlds_api_impl.cpp
index 3b65208..5a6b070 100644
--- a/rehlds/rehlds/rehlds_api_impl.cpp
+++ b/rehlds/rehlds/rehlds_api_impl.cpp
@@ -61,6 +61,10 @@ void EXT_FUNC Log_api(const char* prefix, const char* msg) {
 #endif
 }
 
+DLL_FUNCTIONS* EXT_FUNC GetEntityInterface_api() {
+	return &gEntityInterface;
+}
+
 CRehldsServerStatic g_RehldsServerStatic;
 CRehldsServerData g_RehldsServerData;
 CRehldsHookchains g_RehldsHookchains;
@@ -87,7 +91,15 @@ RehldsFuncs_t g_RehldsApiFuncs =
 	&GetRealTime_api,
 	&GetMsgBadRead_api,
 	&GetCmdSource_api,
-	&Log_api
+	&Log_api,
+	&GetEntityInterface_api,
+	&EV_PlayReliableEvent_api,
+	&SV_LookupSoundIndex,
+	&MSG_StartBitWriting,
+	&MSG_WriteBits,
+	&MSG_WriteBitVec3Coord,
+	&MSG_EndBitWriting,
+	&SZ_GetSpace
 };
 
 sizebuf_t* EXT_FUNC GetNetMessage_api()
@@ -201,6 +213,26 @@ IRehldsHookRegistry_ExecuteServerStringCmd* CRehldsHookchains::ExecuteServerStri
 	return &m_ExecuteServerStringCmd;
 }
 
+IRehldsHookRegistry_SV_EmitEvents* CRehldsHookchains::SV_EmitEvents() {
+	return &m_SV_EmitEvents;
+}
+
+IRehldsHookRegistry_EV_PlayReliableEvent* CRehldsHookchains::EV_PlayReliableEvent() {
+	return &m_EV_PlayReliableEvent;
+}
+
+IRehldsHookRegistry_SV_StartSound* CRehldsHookchains::SV_StartSound() {
+	return &m_SV_StartSound;
+}
+
+IRehldsHookRegistry_PF_Remove_I* CRehldsHookchains::PF_Remove_I() {
+	return &m_PF_Remove_I;
+}
+
+IRehldsHookRegistry_PF_BuildSoundMsg_I* CRehldsHookchains::PF_BuildSoundMsg_I() {
+	return &m_PF_BuildSoundMsg_I;
+}
+
 int EXT_FUNC CRehldsApi::GetMajorVersion()
 {
 	return REHLDS_API_VERSION_MAJOR;
diff --git a/rehlds/rehlds/rehlds_api_impl.h b/rehlds/rehlds/rehlds_api_impl.h
index 95304b3..fdfdc9b 100644
--- a/rehlds/rehlds/rehlds_api_impl.h
+++ b/rehlds/rehlds/rehlds_api_impl.h
@@ -111,6 +111,26 @@ typedef IVoidHookChainRegistryImpl<model_t*, void*> CRehldsHookRegistry_Mod_Load
 typedef IVoidHookChainImpl<model_t*, void*> CRehldsHook_Mod_LoadStudioModel;
 typedef IVoidHookChainRegistryImpl<model_t*, void*> CRehldsHookRegistry_Mod_LoadStudioModel;
 
+//SV_EmitEvents hook
+typedef IVoidHookChainImpl<IGameClient *, packet_entities_t *, sizebuf_t *> CRehldsHook_SV_EmitEvents;
+typedef IVoidHookChainRegistryImpl<IGameClient *, packet_entities_t *, sizebuf_t *> CRehldsHookRegistry_SV_EmitEvents;
+
+//EV_PlayReliableEvent hook
+typedef IVoidHookChainImpl<IGameClient *, int, short unsigned int, float, event_args_t *> CRehldsHook_EV_PlayReliableEvent;
+typedef IVoidHookChainRegistryImpl<IGameClient *, int, short unsigned int, float, event_args_t *> CRehldsHookRegistry_EV_PlayReliableEvent;
+
+//SV_StartSound hook
+typedef IVoidHookChainImpl<int , edict_t *, int, const char *, int, float, int, int> CRehldsHook_SV_StartSound;
+typedef IVoidHookChainRegistryImpl<int , edict_t *, int, const char *, int, float, int, int> CRehldsHookRegistry_SV_StartSound;
+
+//PF_Remove_I hook
+typedef IVoidHookChainImpl<edict_t *> CRehldsHook_PF_Remove_I;
+typedef IVoidHookChainRegistryImpl<edict_t *> CRehldsHookRegistry_PF_Remove_I;
+
+//PF_BuildSoundMsg_I hook
+typedef IVoidHookChainImpl<edict_t *, int, const char *, float, float, int, int, int, int, const float *, edict_t *> CRehldsHook_PF_BuildSoundMsg_I;
+typedef IVoidHookChainRegistryImpl<edict_t *, int, const char *, float, float, int, int, int, int, const float *, edict_t *> CRehldsHookRegistry_PF_BuildSoundMsg_I;
+
 class CRehldsHookchains : public IRehldsHookchains {
 public:
 	CRehldsHookRegistry_Steam_NotifyClientConnect m_Steam_NotifyClientConnect;
@@ -133,6 +153,11 @@ public:
 	CRehldsHookRegistry_Mod_LoadBrushModel m_Mod_LoadBrushModel;
 	CRehldsHookRegistry_Mod_LoadStudioModel m_Mod_LoadStudioModel;
 	CRehldsHookRegistry_ExecuteServerStringCmd m_ExecuteServerStringCmd;
+	CRehldsHookRegistry_SV_EmitEvents m_SV_EmitEvents;
+	CRehldsHookRegistry_EV_PlayReliableEvent m_EV_PlayReliableEvent;
+	CRehldsHookRegistry_SV_StartSound m_SV_StartSound;
+	CRehldsHookRegistry_PF_Remove_I m_PF_Remove_I;
+	CRehldsHookRegistry_PF_BuildSoundMsg_I m_PF_BuildSoundMsg_I;
 
 public:
 	virtual IRehldsHookRegistry_Steam_NotifyClientConnect* Steam_NotifyClientConnect();
@@ -155,6 +180,11 @@ public:
 	virtual IRehldsHookRegistry_Mod_LoadBrushModel* Mod_LoadBrushModel();
 	virtual IRehldsHookRegistry_Mod_LoadStudioModel* Mod_LoadStudioModel();
 	virtual IRehldsHookRegistry_ExecuteServerStringCmd* ExecuteServerStringCmd();
+	virtual IRehldsHookRegistry_SV_EmitEvents* SV_EmitEvents();
+	virtual IRehldsHookRegistry_EV_PlayReliableEvent* EV_PlayReliableEvent();
+	virtual IRehldsHookRegistry_SV_StartSound* SV_StartSound();
+	virtual IRehldsHookRegistry_PF_Remove_I* PF_Remove_I();
+	virtual IRehldsHookRegistry_PF_BuildSoundMsg_I* PF_BuildSoundMsg_I();
 };
 
 extern CRehldsHookchains g_RehldsHookchains;