diff --git a/ArcdpsLogManager/ArcdpsLogManager.csproj b/ArcdpsLogManager/ArcdpsLogManager.csproj
index 2496ef70..a60b90b8 100644
--- a/ArcdpsLogManager/ArcdpsLogManager.csproj
+++ b/ArcdpsLogManager/ArcdpsLogManager.csproj
@@ -17,7 +17,7 @@
         Each new log data update causes a revision increase.
         See LogDataUpdater for the updates.
         -->
-        <Version>1.11.1.7</Version>
+        <Version>1.11.1.8</Version>
     </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="DebounceThrottle" Version="2.0.0" />
diff --git a/ArcdpsLogManager/Logs/Updates/LogDataUpdater.cs b/ArcdpsLogManager/Logs/Updates/LogDataUpdater.cs
index 3bfc7508..49452165 100644
--- a/ArcdpsLogManager/Logs/Updates/LogDataUpdater.cs
+++ b/ArcdpsLogManager/Logs/Updates/LogDataUpdater.cs
@@ -197,11 +197,7 @@ x.Profession is Profession.Thief or Profession.Engineer or Profession.Ranger
 				"Fix NM detection for Temple of Febe."),
 			new LogUpdate(log => log.ParsingVersion < new Version(1, 11, 1, 3)
 			                     && log.Encounter == Encounter.Skorvald,
-				"Fix success detection for Skorvald when all players are dead while the boss is invulnerable at 1%."),
-			new LogUpdate(log => log.ParsingVersion < new Version(1, 11, 1, 4)
-			                     && log.Encounter == Encounter.Other
-			                     && log.MapId == MapIds.LonelyTower,
-				"Add support for Eparch in the Lonely Tower fractal."),
+				"Fix success detection for Skorvald when all players are dead while the boss is invulnerable at 1%."),			
 			new LogUpdate(log => log.ParsingVersion < new Version(1, 11, 1, 7)
 			                     && log.Encounter == Encounter.SoullessHorror, 
 				"Fix detection for Soulless Horror in case the encounter resets before all players are dead."),
@@ -216,6 +212,10 @@ x.Profession is Profession.Thief or Profession.Engineer or Profession.Ranger
 			new LogUpdate(log => log.ParsingVersion < new Version(1, 11, 1, 7)
 			                     && log.Encounter is Encounter.Adina or Encounter.Sabir,
 				"Fix Adina and Sabir possibly being identified as the other one in rare scenarios."),
+			new LogUpdate(log => log.ParsingVersion < new Version(1, 11, 1, 8)
+								 && log.Encounter == Encounter.Other
+								 && log.MapId == MapIds.LonelyTower,
+				"Add support for Eparch in the Lonely Tower fractal."),
 			// When adding a new update, you need to increase the revision (last value) of the version in the .csproj file
 			// unless the version changes more significantly, in that case it can be reset to 0.
 		};
diff --git a/EVTCAnalytics/GameData/GameBuilds.cs b/EVTCAnalytics/GameData/GameBuilds.cs
index 1a529b28..695f9f19 100644
--- a/EVTCAnalytics/GameData/GameBuilds.cs
+++ b/EVTCAnalytics/GameData/GameBuilds.cs
@@ -31,9 +31,15 @@ public static class GameBuilds
 		public static int LonelyTowerRelease = 163141;
 
 		/// <summary>
-		/// Lonely Tower Challenge Mode release.<br></br>
+		/// Lonely Tower Challenge Mode release with HP nerf.<br></br>
 		/// https://wiki.guildwars2.com/wiki/Game_updates/2024-06-04
 		/// </summary>
 		public static int LonelyTowerCMRelease = 163807;
+
+		/// <summary>
+		/// Eparch further HP nerfs for all modes.<br></br>
+		/// https://wiki.guildwars2.com/wiki/Game_updates/2024-06-25
+		/// </summary>
+		public static int LonelyTowerHPNerf2 = 164824;
 	}
 }
\ No newline at end of file
diff --git a/EVTCAnalytics/Processing/EncounterDataProvider.cs b/EVTCAnalytics/Processing/EncounterDataProvider.cs
index 221abf64..55eca137 100644
--- a/EVTCAnalytics/Processing/EncounterDataProvider.cs
+++ b/EVTCAnalytics/Processing/EncounterDataProvider.cs
@@ -676,13 +676,23 @@ private IEncounterData GetPvEEncounterData(Encounter encounter, Agent mainTarget
 				}
 				case Encounter.Eparch:
 				{
+					// Normal Mode Release: 31.771.528
+					// Challenge Mode Release: 32.618.906
+					// Challenge Mode Release (Normal Mode T4): 19.857.206
+					// HP Nerfs Patch (Challenge Mode): 22.833.236 
+					// HP Nerfs Patch (Normal Mode T4): 13.900.044
 					return GetDefaultBuilder(encounter, mainTarget)
 						.WithResult(new AnyCombinedResultDeterminer(
 								new AgentKillingBlowDeterminer(mainTarget),
 								new BuffAppliedBelowHealthThresholdDeterminer(mainTarget, 0.2f, SkillIds.Determined)))
-						// On release, Eparch had 31,771,528 health in NM.
-						// On CM release, Eparch was reduced to 19,857,206 in NM and CM health is 32,618,906
-						.WithModes(new AgentHealthModeDeterminer(mainTarget, 31_800_000))
+						.WithModes(new ConditionalModeDeterminer(
+							(gameBuild != null && gameBuild < GameBuilds.LonelyTowerCMRelease,
+								new AgentHealthModeDeterminer(mainTarget, 31_000_000, EncounterMode.Normal)),
+							(gameBuild != null && gameBuild >= GameBuilds.LonelyTowerCMRelease && gameBuild <= GameBuilds.LonelyTowerHPNerf2,
+								new AgentHealthModeDeterminer(mainTarget, 31_000_000, EncounterMode.Challenge)),
+							(gameBuild != null && gameBuild >= GameBuilds.LonelyTowerHPNerf2,
+								new AgentHealthModeDeterminer(mainTarget, 21_000_000, EncounterMode.Challenge))
+							))
 						.Build();
 				}
 				default: