diff --git a/Source/monster.cpp b/Source/monster.cpp
index fd03624d1..b4a7b4e97 100644
--- a/Source/monster.cpp
+++ b/Source/monster.cpp
@@ -2689,7 +2689,7 @@ BOOL M_DoRSpAttack(int i)
 		    monster[i]._mVar3,
 		    0);
 #ifdef HELLFIRE
-		if (Monsters[i].Snds[3][0] != 0)
+		if (Monsters[i].Snds[3][0] != 0) // BUGFIX `Monsters[i].` should be `monster[i].MType->`
 #endif
 			PlayEffect(i, 3);
 	}
diff --git a/Source/objects.cpp b/Source/objects.cpp
index 2341738fa..043624704 100644
--- a/Source/objects.cpp
+++ b/Source/objects.cpp
@@ -717,14 +717,15 @@ void AddChestTraps()
 
 void LoadMapObjects(BYTE *pMap, int startx, int starty, int x1, int y1, int w, int h, int leveridx)
 {
-	int rw, rh, i, j, oi;
+	int rw, rh, i, j, oi, type;
 	BYTE *lm;
 	long mapoff;
 
 	InitObjFlag = TRUE;
 
-	lm = pMap + 2;
-	rw = pMap[0];
+	lm = pMap;
+	rw = lm[0];
+	lm += 2;
 	rh = *lm;
 	mapoff = (rw * rh + 1) * 2;
 	rw <<= 1;
@@ -735,7 +736,8 @@ void LoadMapObjects(BYTE *pMap, int startx, int starty, int x1, int y1, int w, i
 	for (j = 0; j < rh; j++) {
 		for (i = 0; i < rw; i++) {
 			if (*lm) {
-				AddObject(ObjTypeConv[*lm], startx + 16 + i, starty + 16 + j);
+				type = lm[0];
+				AddObject(ObjTypeConv[type], startx + 16 + i, starty + 16 + j);
 				oi = ObjIndex(startx + 16 + i, starty + 16 + j);
 				SetObjMapRange(oi, x1, y1, x1 + w, y1 + h, leveridx);
 			}
diff --git a/Source/pack.cpp b/Source/pack.cpp
index 89cf0a9c4..344af853b 100644
--- a/Source/pack.cpp
+++ b/Source/pack.cpp
@@ -70,12 +70,10 @@ void PackPlayer(PkPlayerStruct *pPack, int pnum, BOOL manashield)
 	pPack->pMaxManaBase = SwapLE32(pPlayer->_pMaxManaBase);
 	pPack->pMemSpells = SDL_SwapLE64(pPlayer->_pMemSpells);
 
-	for (i = 0; i < 37; i++) // Should be MAX_SPELLS but set to 37 to make save games compatible
+	for (i = 0; i <= 36; i++) // Should be MAX_SPELLS-1 but set to 36 to make save games compatible	
 		pPack->pSplLvl[i] = pPlayer->_pSplLvl[i];
-#ifdef HELLFIRE
 	for (i = 37; i < 47; i++)
 		pPack->pSplLvl2[i - 37] = pPlayer->_pSplLvl[i];
-#endif
 
 	pki = &pPack->InvBody[0];
 	pi = &pPlayer->InvBody[0];
@@ -223,16 +221,10 @@ void UnPackPlayer(PkPlayerStruct *pPack, int pnum, BOOL killok)
 	pPlayer->_pManaBase = SwapLE32(pPack->pManaBase);
 	pPlayer->_pMemSpells = SDL_SwapLE64(pPack->pMemSpells);
 
-#ifdef HELLFIRE
 	for (i = 0; i <= 36; i++) // Should be MAX_SPELLS-1 but set to 36 to make save games compatible
 		pPlayer->_pSplLvl[i] = pPack->pSplLvl[i];
-	char *p = pPack->pSplLvl2;
 	for (i = 37; i < 47; i++)
-		pPlayer->_pSplLvl[i] = p[i - 37];
-#else
-	for (i = 0; i < MAX_SPELLS; i++)
-		pPlayer->_pSplLvl[i] = pPack->pSplLvl[i];
-#endif
+		pPlayer->_pSplLvl[i] = pPack->pSplLvl2[i - 37];
 
 	pki = &pPack->InvBody[0];
 	pi = &pPlayer->InvBody[0];
diff --git a/Source/pfile.cpp b/Source/pfile.cpp
index 4834fea61..026cac9ee 100644
--- a/Source/pfile.cpp
+++ b/Source/pfile.cpp
@@ -82,6 +82,7 @@ static BOOL pfile_read_hero(HANDLE archive, PkPlayerStruct *pPack)
 	if (!SFileOpenFileEx(archive, "hero", 0, &file)) {
 		return FALSE;
 	} else {
+		buf = NULL;
 		BOOL ret = FALSE;
 		const char *password;
 
@@ -106,9 +107,9 @@ static BOOL pfile_read_hero(HANDLE archive, PkPlayerStruct *pPack)
 					ret = TRUE;
 				}
 			}
-			if (buf)
-				mem_free_dbg(buf);
 		}
+		if (buf)
+			mem_free_dbg(buf);
 		SFileCloseFile(file);
 		return ret;
 	}
@@ -325,14 +326,56 @@ BOOL pfile_archive_contains_game(HANDLE hsArchive, DWORD save_num)
 {
 	HANDLE file;
 
+#ifdef HELLFIRE
+	DWORD read, size;
+	BOOL ret = FALSE;
+	gbLoadGame = FALSE;
+#endif
+
 	if (gbMaxPlayers != 1)
 		return FALSE;
 
 	if (!SFileOpenFileEx(hsArchive, "game", 0, &file))
 		return FALSE;
 
+#ifdef HELLFIRE
+	DWORD dwlen = SFileGetFileSize(file, NULL);
+	if (!dwlen)
+		app_fatal("Invalid save file");
+
+	BYTE *ptr = DiabloAllocPtr(dwlen + 8);
+	BYTE *buf = ptr + 4;
+
+	if (SFileReadFile(file, buf, dwlen, &read, NULL)) {
+		if (read == dwlen) {
+			const char *password;
+			password = PASSWORD_SINGLE;
+			if (gbMaxPlayers > 1)
+				password = PASSWORD_MULTI;
+			gbLoadGame = TRUE;
+			if (codec_decode(buf, dwlen, password)) {
+				int magic = *buf << 24;
+				buf++;
+				magic |= *buf << 16;
+				buf++;
+				magic |= *buf << 8;
+				buf++;
+				magic |= *buf;
+				if (magic == 'HELF') {
+					ret = TRUE;
+				}
+			}
+		}
+	}
+
+	if (ptr)
+		mem_free_dbg(ptr);
+	SFileCloseFile(file);
+	return ret;
+#else
 	SFileCloseFile(file);
 	return TRUE;
+#endif
 }
 
 BOOL pfile_ui_set_class_stats(unsigned int player_class_nr, _uidefaultstats *class_stats)
@@ -354,12 +397,20 @@ BOOL pfile_ui_save_create(_uiheroinfo *heroinfo)
 	PkPlayerStruct pkplr;
 
 	save_num = pfile_get_save_num_from_name(heroinfo->name);
+#ifdef HELLFIRE
+	if (save_num >= MAX_CHARACTERS) {
+#else
 	if (save_num == MAX_CHARACTERS) {
+#endif
 		for (save_num = 0; save_num < MAX_CHARACTERS; save_num++) {
 			if (!hero_names[save_num][0])
 				break;
 		}
+#ifdef HELLFIRE
+		if (save_num >= MAX_CHARACTERS)
+#else
 		if (save_num == MAX_CHARACTERS)
+#endif
 			return FALSE;
 	}
 	if (!pfile_open_archive(FALSE, save_num))
@@ -387,14 +438,14 @@ BOOL pfile_get_file_name(DWORD lvl, char *dst)
 			return FALSE;
 		fmt = "hero";
 	} else {
-		if (lvl < 17)
+		if (lvl < NUMLEVELS)
 			fmt = "perml%02d";
-		else if (lvl < 34) {
-			lvl -= 17;
+		else if (lvl < NUMLEVELS * 2) {
+			lvl -= NUMLEVELS;
 			fmt = "perms%02d";
-		} else if (lvl == 34)
+		} else if (lvl == NUMLEVELS * 2)
 			fmt = "game";
-		else if (lvl == 35)
+		else if (lvl == NUMLEVELS * 2 + 1)
 			fmt = "hero";
 		else
 			return FALSE;
@@ -561,7 +612,7 @@ void pfile_write_save_file(const char *pszName, BYTE *pbData, DWORD dwLen, DWORD
 		codec_encode(pbData, dwLen, qwLen, password);
 	}
 	if (!pfile_open_archive(FALSE, save_num))
-		app_fatal("Unable to write so save file archive");
+		app_fatal("Unable to write to save file archive");
 	mpqapi_write_file(pszName, pbData, qwLen);
 	pfile_flush(TRUE, save_num);
 }
@@ -584,7 +635,7 @@ BYTE *pfile_read(const char *pszName, DWORD *pdwLen)
 	if (*pdwLen == 0)
 		app_fatal("Invalid save file");
 
-	buf = (BYTE *)DiabloAllocPtr(*pdwLen);
+	buf = DiabloAllocPtr(*pdwLen);
 	if (!SFileReadFile(save, buf, *pdwLen, &nread, NULL))
 		app_fatal("Unable to read save file");
 	SFileCloseFile(save);
@@ -605,9 +656,8 @@ BYTE *pfile_read(const char *pszName, DWORD *pdwLen)
 		}
 
 		*pdwLen = codec_decode(buf, *pdwLen, password);
-		if (*pdwLen == 0) {
+		if (*pdwLen == 0)
 			app_fatal("Invalid save file");
-		}
 	}
 	return buf;
 }