diff --git a/static/script.js b/static/script.js
index 77d940bc..9dfaab4f 100644
--- a/static/script.js
+++ b/static/script.js
@@ -3858,8 +3858,10 @@ function updateRadarWindow(msg) {
     const hasTiles = dungeonTileCanvases && Object.keys(dungeonTileCanvases).length > 0;
 
     // Normalize rotation value to radians (same as UB's DungeonCell.cs)
+    // Raw value is quaternion W component: 1→180°, ~0.707→-90°, ~-0.707→90°, 0→0°
     function cellRotation(rot) {
-      if (rot === 1) return Math.PI;
+      if (Math.abs(rot - 1) < 0.01) return Math.PI;
+      if (Math.abs(rot + 1) < 0.01) return Math.PI;
       if (rot < -0.70 && rot > -0.8) return Math.PI / 2;
       if (rot > 0.70 && rot < 0.8) return -Math.PI / 2;
       return 0;
@@ -3877,8 +3879,9 @@ function updateRadarWindow(msg) {
       ctx.globalAlpha = isCurrentFloor ? 0.85 : 0.12;
 
       (level.cells || []).forEach(cell => {
-        // UB mirrors X, Y flipped for north-up (AC Y+ = north, canvas Y+ = down)
-        const dx = -(cell.x - playerX) * scale;
+        // Direct relative position (UB mirrors both cell and player, cancels out)
+        // Y negated for north-up (AC Y+ = north, canvas Y+ = down)
+        const dx = (cell.x - playerX) * scale;
         const dy = -(cell.y - playerY) * scale;
         const tileCanvas = hasTiles ? dungeonTileCanvases[String(cell.env_id)] : null;
 
@@ -3976,7 +3979,7 @@ function updateRadarWindow(msg) {
     // Use raw physics coords in dungeons (X mirrored), EW/NS on surface
     let dX, dY;
     if (isDungeon && obj.raw_x !== undefined) {
-      dX = -(obj.raw_x - playerX);  // X mirrored
+      dX = (obj.raw_x - playerX);
       dY = -(obj.raw_y - playerY);  // Y flipped for north-up
     } else {
       dX = obj.ew - playerEW;
@@ -4039,7 +4042,7 @@ function updateRadarWindow(msg) {
   const withDist = objects.map(obj => {
     let distMeters, dX, dY;
     if (isDungeon && obj.raw_x !== undefined) {
-      dX = -(obj.raw_x - playerX);
+      dX = (obj.raw_x - playerX);
       dY = -(obj.raw_y - playerY);
       distMeters = Math.sqrt(dX * dX + dY * dY); // raw coords are ~meters
     } else {