diff --git a/src/g_levellocals.h b/src/g_levellocals.h
index 143743e782..31b7bf433d 100644
--- a/src/g_levellocals.h
+++ b/src/g_levellocals.h
@@ -93,68 +93,9 @@ class DAutomapBase;
 typedef TMap<int, int> FDialogueIDMap;				// maps dialogue IDs to dialogue array index (for ACS)
 typedef TMap<FName, int> FDialogueMap;				// maps actor class names to dialogue array index
 
-struct FLevelData
+struct FLevelLocals
 {
-	TArray<vertex_t> vertexes;
-	TArray<sector_t> sectors;
-	TArray<line_t*> linebuffer;	// contains the line lists for the sectors.
-	TArray<subsector_t*> subsectorbuffer;	// contains the subsector lists for the sectors.
-	TArray<line_t> lines;
-	TArray<side_t> sides;
-	TArray<seg_t *> segbuffer;	// contains the seg links for the sidedefs.
-	TArray<seg_t> segs;
-	TArray<subsector_t> subsectors;
-	TArray<node_t> nodes;
-	TArray<subsector_t> gamesubsectors;
-	TArray<node_t> gamenodes;
-	node_t *headgamenode;
-	TArray<uint8_t> rejectmatrix;
-	TArray<zone_t>	Zones;
-	TArray<FPolyObj> Polyobjects;
-
-	TArray<FSectorPortal> sectorPortals;
-	TArray<FLinePortal> linePortals;
-
-	// Portal information.
-	FDisplacementTable Displacements;
-	FPortalBlockmap PortalBlockmap;
-	TArray<FLinePortal*> linkedPortals;	// only the linked portals, this is used to speed up looking for them in P_CollectConnectedGroups.
-	TArray<FSectorPortalGroup *> portalGroups;
-	TArray<FLinePortalSpan> linePortalSpans;
-	FSectionContainer sections;
-	FCanvasTextureInfo canvasTextureInfo;
-
-	// [ZZ] Destructible geometry information
-	TMap<int, FHealthGroup> healthGroups;
-
-	FBlockmap blockmap;
-	TArray<polyblock_t *> PolyBlockMap;
-
-	// These are copies of the loaded map data that get used by the savegame code to skip unaltered fields
-	// Without such a mechanism the savegame format would become too slow and large because more than 80-90% are normally still unaltered.
-	TArray<sector_t>	loadsectors;
-	TArray<line_t>	loadlines;
-	TArray<side_t>	loadsides;
-
-	// Maintain single and multi player starting spots.
-	TArray<FPlayerStart> deathmatchstarts;
-	FPlayerStart		playerstarts[MAXPLAYERS];
-	TArray<FPlayerStart> AllPlayerStarts;
-
-	FBehaviorContainer Behaviors;
-	AActor *TIDHash[128];
-	
-	TArray<FStrifeDialogueNode *> StrifeDialogues;
-	FDialogueIDMap DialogueRoots;
-	FDialogueMap ClassRoots;
-
-
-};
-
-
-struct FLevelLocals : public FLevelData
-{
-	FLevelLocals() : tagManager(this) {}
+	FLevelLocals() : tagManager(this), Behaviors(this) {}
 
 	friend class MapLoader;
 
@@ -426,6 +367,58 @@ public:
 			S_ChangeMusic(Music, musicorder);
 	}
 
+	TArray<vertex_t> vertexes;
+	TArray<sector_t> sectors;
+	TArray<line_t*> linebuffer;	// contains the line lists for the sectors.
+	TArray<subsector_t*> subsectorbuffer;	// contains the subsector lists for the sectors.
+	TArray<line_t> lines;
+	TArray<side_t> sides;
+	TArray<seg_t *> segbuffer;	// contains the seg links for the sidedefs.
+	TArray<seg_t> segs;
+	TArray<subsector_t> subsectors;
+	TArray<node_t> nodes;
+	TArray<subsector_t> gamesubsectors;
+	TArray<node_t> gamenodes;
+	node_t *headgamenode;
+	TArray<uint8_t> rejectmatrix;
+	TArray<zone_t>	Zones;
+	TArray<FPolyObj> Polyobjects;
+
+	TArray<FSectorPortal> sectorPortals;
+	TArray<FLinePortal> linePortals;
+
+	// Portal information.
+	FDisplacementTable Displacements;
+	FPortalBlockmap PortalBlockmap;
+	TArray<FLinePortal*> linkedPortals;	// only the linked portals, this is used to speed up looking for them in P_CollectConnectedGroups.
+	TArray<FSectorPortalGroup *> portalGroups;
+	TArray<FLinePortalSpan> linePortalSpans;
+	FSectionContainer sections;
+	FCanvasTextureInfo canvasTextureInfo;
+
+	// [ZZ] Destructible geometry information
+	TMap<int, FHealthGroup> healthGroups;
+
+	FBlockmap blockmap;
+	TArray<polyblock_t *> PolyBlockMap;
+
+	// These are copies of the loaded map data that get used by the savegame code to skip unaltered fields
+	// Without such a mechanism the savegame format would become too slow and large because more than 80-90% are normally still unaltered.
+	TArray<sector_t>	loadsectors;
+	TArray<line_t>	loadlines;
+	TArray<side_t>	loadsides;
+
+	// Maintain single and multi player starting spots.
+	TArray<FPlayerStart> deathmatchstarts;
+	FPlayerStart		playerstarts[MAXPLAYERS];
+	TArray<FPlayerStart> AllPlayerStarts;
+
+	FBehaviorContainer Behaviors;
+	AActor *TIDHash[128];
+
+	TArray<FStrifeDialogueNode *> StrifeDialogues;
+	FDialogueIDMap DialogueRoots;
+	FDialogueMap ClassRoots;
 
 	uint8_t		md5[16];			// for savegame validation. If the MD5 does not match the savegame won't be loaded.
 	int			time;			// time in the hub
diff --git a/src/p_acs.cpp b/src/p_acs.cpp
index c2dd9a3c91..6d2e62082f 100644
--- a/src/p_acs.cpp
+++ b/src/p_acs.cpp
@@ -1447,7 +1447,10 @@ void P_CollectACSGlobalStrings()
 			GlobalACSStrings.MarkStringArray(&stack->buffer[0], sp);
 		}
 	}
-	level.Behaviors.MarkLevelVarStrings();
+	for(auto Level : AllLevels())
+	{ 
+		Level->Behaviors.MarkLevelVarStrings();
+	}
 	P_MarkWorldVarStrings();
 	P_MarkGlobalVarStrings();
 	GlobalACSStrings.PurgeStrings();
@@ -1951,7 +1954,7 @@ FBehavior *FBehaviorContainer::LoadModule (int lumpnum, FileReader *fr, int len)
 	}
 
 	FBehavior * behavior = new FBehavior ();
-	if (behavior->Init(lumpnum, fr, len))
+	if (behavior->Init(Level, lumpnum, fr, len))
 	{
 		return behavior;
 	}
@@ -2001,9 +2004,9 @@ void FBehaviorContainer::MarkLevelVarStrings()
 		StaticModules[modnum]->MarkMapVarStrings();
 	}
 	// Mark running scripts' local variables.
-	if (level.ACSThinker != nullptr)
+	if (Level->ACSThinker != nullptr)
 	{
-		for (DLevelScript *script = level.ACSThinker->Scripts; script != NULL; script = script->GetNext())
+		for (DLevelScript *script = Level->ACSThinker->Scripts; script != NULL; script = script->GetNext())
 		{
 			script->MarkLocalVarStrings();
 		}
@@ -2018,9 +2021,9 @@ void FBehaviorContainer::LockLevelVarStrings(int levelnum)
 		StaticModules[modnum]->LockMapVarStrings(levelnum);
 	}
 	// Lock running scripts' local variables.
-	if (level.ACSThinker != nullptr)
+	if (Level->ACSThinker != nullptr)
 	{
-		for (DLevelScript *script = level.ACSThinker->Scripts; script != NULL; script = script->GetNext())
+		for (DLevelScript *script = Level->ACSThinker->Scripts; script != NULL; script = script->GetNext())
 		{
 			script->LockLocalVarStrings(levelnum);
 		}
@@ -2205,7 +2208,7 @@ FBehavior::FBehavior()
 }
 	
 	
-bool FBehavior::Init(int lumpnum, FileReader * fr, int len)
+bool FBehavior::Init(FLevelLocals *Level, int lumpnum, FileReader * fr, int len)
 {
 	uint8_t *object;
 	int i;
@@ -2267,7 +2270,7 @@ bool FBehavior::Init(int lumpnum, FileReader * fr, int len)
 		delete[] object;
 		return false;
 	}
-    LibraryID = level.Behaviors.StaticModules.Push (this) << LIBRARYID_SHIFT;
+    LibraryID = Level->Behaviors.StaticModules.Push (this) << LIBRARYID_SHIFT;
 
 	if (fr == NULL)
 	{
@@ -2556,7 +2559,7 @@ bool FBehavior::Init(int lumpnum, FileReader * fr, int len)
 					}
 					else
 					{
-						module = level.Behaviors.LoadModule (lump);
+						module = Level->Behaviors.LoadModule (lump);
 					}
 					if (module != NULL) Imports.Push (module);
 					do {;} while (parse[++i]);
@@ -3285,7 +3288,7 @@ void FBehavior::StartTypedScripts (uint16_t type, AActor *activator, bool always
 
 void FBehaviorContainer::StopMyScripts (AActor *actor)
 {
-	DACSThinker *controller = level.ACSThinker;
+	DACSThinker *controller = actor->Level->ACSThinker;
 
 	if (controller != NULL)
 	{
@@ -10440,13 +10443,17 @@ FSerializer &Serialize(FSerializer &arc, const char *key, acsdefered_t &defer, a
 
 CCMD (scriptstat)
 {
-	if (level.ACSThinker == NULL)
+	for (auto Level : AllLevels())
 	{
-		Printf ("No scripts are running.\n");
-	}
-	else
-	{
-		level.ACSThinker->DumpScriptStatus ();
+		Printf("Script status for %s", Level->MapName.GetChars());
+		if (Level->ACSThinker == nullptr)
+		{
+			Printf("No scripts are running.\n");
+		}
+		else
+		{
+			Level->ACSThinker->DumpScriptStatus();
+		}
 	}
 }
 
@@ -10659,7 +10666,7 @@ static void ShowProfileData(TArray<ProfileCollector> &profiles, long ilimit,
 	}
 }
 
-CCMD(acsprofile)
+void ACSProfile(FLevelLocals *Level, FCommandLine &argv)
 {
 	static int (*sort_funcs[])(const void*, const void *) =
 	{
@@ -10678,8 +10685,9 @@ CCMD(acsprofile)
 
 	assert(countof(sort_names) == countof(sort_match_len));
 
-	level.Behaviors.ArrangeScriptProfiles(ScriptProfiles);
-	level.Behaviors.ArrangeFunctionProfiles(FuncProfiles);
+	Printf("ACS profile for %s\n", Level->MapName.GetChars());
+	Level->Behaviors.ArrangeScriptProfiles(ScriptProfiles);
+	Level->Behaviors.ArrangeFunctionProfiles(FuncProfiles);
 
 	if (argv.argc() > 1)
 	{
@@ -10730,6 +10738,14 @@ CCMD(acsprofile)
 	ShowProfileData(FuncProfiles, limit, sorter, true);
 }
 
+CCMD(acsprofile)
+{
+	for (auto Level : AllLevels())
+	{
+		ACSProfile(Level, argv);
+	}
+}
+
 ADD_STAT(ACS)
 {
 	return FStringf("ACS time: %f ms", ACSTime.TimeMS());
diff --git a/src/p_acs.h b/src/p_acs.h
index 5f106fbb19..7eea0c22ad 100644
--- a/src/p_acs.h
+++ b/src/p_acs.h
@@ -349,7 +349,7 @@ class FBehavior
 public:
 	FBehavior ();
 	~FBehavior ();
-	bool Init(int lumpnum, FileReader * fr = NULL, int len = 0);
+	bool Init(FLevelLocals *l, int lumpnum, FileReader * fr = NULL, int len = 0);
 
 	bool IsGood ();
 	uint8_t *FindChunk (uint32_t id) const;
@@ -425,8 +425,11 @@ private:
 
 struct FBehaviorContainer
 {
+	FLevelLocals *Level;
 	TArray<FBehavior *> StaticModules;
 
+	FBehaviorContainer(FLevelLocals *l) : Level(l) {}
+
 	FBehavior *LoadModule(int lumpnum, FileReader *fr = nullptr, int len = 0);
 	void LoadDefaultModules();
 	void UnloadModules();