Update LiveSplit.AutoSplitters.xml (#1991)

* Update LiveSplit.AutoSplitters.xml

* Update LiveSplit.AutoSplitters.xml

Author: Mattmatt10111

LiveSplit.AutoSplitters.xml

@@ -44,6 +44,16 @@
         <Type>Script</Type>
         <Description>Autostart, Autoreset, Load Removal and Autosplit by Streetbackguy</Description>
     </AutoSplitter>
+    <AutoSplitter>
+        <Games>
+            <Game>Red Dead Redemption: Undead Nightmare</Game>
+        </Games>
+        <URLs>
+            <URL>https://raw.githubusercontent.com/Mattmatt10111/asl-scripts/refs/heads/master/RDRUndeadNightmare.asl</URL>
+        </URLs>
+        <Type>Script</Type>
+        <Description>Autostart and Load Removal by Mattmatt</Description>
+    </AutoSplitter>
     <AutoSplitter>
         <Games>
             <Game>Red Dead Redemption</Game>