diff --git a/projects/Boneworks/SpeedrunTools/src/Features/ArenaSplitState.cs b/projects/Boneworks/SpeedrunTools/src/Features/ArenaSplitState.cs
new file mode 100644
index 0000000..aa93f3d
--- /dev/null
+++ b/projects/Boneworks/SpeedrunTools/src/Features/ArenaSplitState.cs
@@ -0,0 +1,50 @@
+using MelonLoader;
+using HarmonyLib;
+using UnityEngine;
+using StressLevelZero.Arena;
+
+namespace Sst.Features {
+class ArenaSplitState : Feature {
+  // State that the ASL finds using signature scanning
+  private static byte[] State = {
+    // 0 = magic string start
+    // Signature is set dynamically to avoid finding this hardcoded array
+    0x00, // 0xD5
+    0xE2,
+    0x03,
+    0x34,
+    0xC2,
+    0xDF,
+    0x63,
+    // 7 = arena index
+    0x00,
+  };
+
+  private static bool _isCurrentChallengeCompleted = true;
+
+  public ArenaSplitState() { State[0] = 0xD5; }
+
+  [HarmonyPatch(typeof(Arena_GameManager),
+                nameof(Arena_GameManager.RingTheBell))]
+  class ArenaGameManager_RingTheBell_Patch {
+    [HarmonyPostfix()]
+    internal static void Postfix(Arena_GameManager __instance) {
+      _isCurrentChallengeCompleted =
+          __instance.activeChallenge?.profile?.completedHard ?? true;
+    }
+  }
+
+  [HarmonyPatch(typeof(Arena_GameManager),
+                nameof(Arena_GameManager.SaveChallengeCompletion))]
+  class ArenaGameManager_SaveChallengeCompletion_Patch {
+    [HarmonyPostfix()]
+    internal static void Postfix(Arena_GameManager __instance) {
+      if (!_isCurrentChallengeCompleted &&
+          __instance.activeChallenge.profile.completedHard) {
+        _isCurrentChallengeCompleted = true;
+        State[7]++;
+      }
+    }
+  }
+}
+}
diff --git a/projects/Boneworks/SpeedrunTools/src/Mod.cs b/projects/Boneworks/SpeedrunTools/src/Mod.cs
index 218c7e2..b7a11ed 100644
--- a/projects/Boneworks/SpeedrunTools/src/Mod.cs
+++ b/projects/Boneworks/SpeedrunTools/src/Mod.cs
@@ -31,6 +31,7 @@ public class Mod : MelonMod {
     new Features.Gripless(),
     new Features.Armless(),
     new Features.RestartLevel(),
+    new Features.ArenaSplitState(),
 
     // Dev features
     new Features.Speedometer(),
diff --git a/scripts/Boneworks100.asl b/scripts/Boneworks100.asl
new file mode 100644
index 0000000..6ca120e
--- /dev/null
+++ b/scripts/Boneworks100.asl
@@ -0,0 +1,110 @@
+state("BONEWORKS") {
+  int levelNumber : "GameAssembly.dll", 0x01E7E4E0, 0xB8, 0x590;
+}
+
+init {
+  var module = modules.First(x => x.ModuleName == "vrclient_x64.dll");
+
+  var scanner =
+      new SignatureScanner(game, module.BaseAddress, module.ModuleMemorySize);
+
+  vars.loadingPointer = scanner.Scan(new SigScanTarget(
+      3,
+      "4889??????????488B??????????48FF????488B??????????488B??4889??????????488D??????????488B??????????48FF??????????????????????????????488B??????????418B") {
+    OnFound = (process, scanners, addr) =>
+        addr + 0x4 + process.ReadValue<int>(addr)
+  });
+  if (vars.loadingPointer == IntPtr.Zero) {
+    throw new Exception("Game engine not initialized - retrying");
+  }
+
+  vars.isLoading =
+      new MemoryWatcher<bool>(new DeepPointer(vars.loadingPointer, 0xC54));
+
+  var arenaTarget = new SigScanTarget(7, "D5 E2 03 34 C2 DF 63 ??");
+  IntPtr ptr = IntPtr.Zero;
+  foreach (var page in game.MemoryPages(true)) {
+    var pageScanner =
+        new SignatureScanner(game, page.BaseAddress, (int)page.RegionSize);
+    ptr = pageScanner.Scan(arenaTarget);
+    if (ptr != IntPtr.Zero)
+      break;
+  }
+  if (ptr == IntPtr.Zero) {
+    throw new Exception("Arena state not found - retrying");
+  }
+  vars.arenaWatcher = new MemoryWatcher<byte>(ptr);
+
+  // Index in levelOrder to start the run at (for practice)
+  vars.startingSplit = 0;
+
+  // Will split when entering each level in this list in this order
+  // If entering a level later in the list it will split until it reaches it
+  vars.levelOrder = new int[] {
+    2,  // scene_theatrigon_movie01 -> scene_breakroom
+    4,  // scene_museum
+    5,  // scene_streets
+    5,  // scene_streets
+    6,  // scene_runoff
+    6,  // scene_runoff
+    7,  // scene_sewerStation
+    8,  // scene_warehouse
+    9,  // scene_subwayStation
+    10, // scene_tower
+    11, // scene_towerBoss
+    12, // scene_theatrigon_movie02 -> scene_dungeon
+    14, // scene_arena
+    15, // scene_throneRoom
+    1,  // scene_mainMenu
+    18, // scene_redactedChamber
+    19, // sandbox_handgunBox
+    22, // scene_hoverJunkers
+    16, // arena_fantasy
+    23, // zombie_warehouse
+    // 23, // zombie_warehouse
+    // 23, // zombie_warehouse
+    1, // scene_mainMenu
+  };
+  vars.levelOrderIdx = 0;
+  vars.targetLevelOrderIdx = vars.startingSplit;
+}
+
+update {
+  vars.isLoading.Update(game);
+  vars.arenaWatcher.Update(game);
+}
+
+isLoading { return vars.isLoading.Current; }
+
+start {
+  if (vars.isLoading.Current &&
+      current.levelNumber == vars.levelOrder[vars.startingSplit]) {
+    vars.levelOrderIdx = 0;
+    return true;
+  }
+  return false;
+}
+
+split {
+  if (vars.arenaWatcher.Current != vars.arenaWatcher.Old) {
+    return true;
+  }
+
+  if (vars.isLoading.Current &&
+      (!vars.isLoading.Old || current.levelNumber != old.levelNumber)) {
+    var nextLevelOrderIdx = vars.levelOrderIdx + 1;
+    if (nextLevelOrderIdx < vars.levelOrder.Length &&
+        vars.levelOrder[nextLevelOrderIdx] == current.levelNumber) {
+      vars.targetLevelOrderIdx = nextLevelOrderIdx;
+    }
+  }
+
+  if (vars.levelOrderIdx < vars.targetLevelOrderIdx) {
+    vars.levelOrderIdx++;
+    return true;
+  }
+
+  return false;
+}
+
+exit { timer.IsGameTimePaused = true; }