===================================================================
--- original.js
+++ change.js
@@ -6,13 +6,15 @@
 /****************************************************************************************** */ 
 /****************************************************************************************** */ 
 /************************************* ATHLETE CLASS ************************************** */
 /****************************************************************************************** */ 
-var Athlete = Container.expand(function () {
+var Athlete = Container.expand(function (line) {
 	var self = Container.call(this);
-	self.speedX = 5;
+	self.speedX = -globalSpeed;
 	self.jumpSpeed = -17;
 	self.gravity = 0.5;
+	self.lineIndex = line;
+	self.isAi = line > 0;
 	self.isOnGround = true;
 	self.isFalling = false; // Indicates if the athlete is currently falling
 	self.currentPosture = ""; // Store the name of the current posture
 	self.isChangingPosture = false; // 0 when idle or moving down, 1 when moving up
@@ -64,17 +66,8 @@
 		scaleX: 1,
 		scaleY: 1.0,
 		tint: self.tint
 	});
-	self.shadow = self.trunk.attachAsset('head', {
-		anchorX: 0,
-		anchorY: 1,
-		alpha: 0.5,
-		rotation: Math.PI * 0.5,
-		scaleX: 1,
-		scaleY: 1,
-		tint: 0x000000
-	});
 	// Left foot asset attachment removed
 	// FUNCTIONS
 	self.updatePosture = function () {
 		var speed = 0.2; // Speed of transition
@@ -140,26 +133,32 @@
 			} else {
 				self.speedY += self.gravity * Math.abs(globalSpeed / 10);
 				self.y += self.speedY * Math.abs(globalSpeed / 10);
 				log("self.speedY=" + self.speedY, " / self.y=" + self.y);
-				var groundY = groundLevel - 200;
-				if (self.y >= groundY) {
-					self.y = groundY;
+				if (self.y >= linesGroundLevels[self.lineIndex]) {
+					self.y = linesGroundLevels[self.lineIndex];
 					self.isOnGround = true;
 					self.speedY = 0;
 				} else {
 					self.jumpAnim();
 				}
 			}
 		} else {
 			self.y += 5;
-			if (self.y >= groundLevel) {
-				self.y = groundLevel;
+			if (self.y >= linesGroundLevels[self.lineIndex] + 200) {
+				self.y = linesGroundLevels[self.lineIndex] + 200;
 				self.isOnGround = true;
 				self.speedY = 0;
 			}
 		}
 		self.updatePosture();
+		if (self.isAi) {
+			if (athlete.isFalling) {
+				self.moveRight();
+			} else {
+				self.x += 1 - Math.random();
+			}
+		}
 	};
 	self.runAnim = function () {
 		var ocsilDelay = 5;
 		var armsAmplitude = 0.5;
@@ -227,9 +226,9 @@
 	};
 	self.restore = function () {
 		log("restore...");
 		self.x = 400;
-		self.y = groundLevel - 200;
+		self.y = linesGroundLevels[self.lineIndex];
 		self.speedY = 0;
 		self.trunk.rotation = 0;
 		self.rightArm.rotation = idlePosture.rightArm.r;
 		self.leftArm.rotation = 0;
@@ -321,8 +320,10 @@
 var opponent1;
 var obstacles = [];
 var obstaclesLine2 = [];
 var groundLevel = 2732 - 200; // Ground level set 200px from the bottom
+var linesGroundLevels = [groundLevel - 200, groundLevel - 420]; // Ground level set 200px from the bottom
+var groundLevelLine1 = 2732 - 200; // Ground level set 200px from the bottom
 var obstacleSpawnTicker = 0;
 var obstacleSpawnRate = 180; // Spawn an obstacle every 2 seconds
 var obstacleJustPassed = false;
 var track;
@@ -421,14 +422,13 @@
 	track4 = game.addChild(new Track());
 	track4.x = 2048;
 	track4.y = 2732 - 1024;
 	// Initialize athlete
-	athlete = game.addChild(new Athlete());
+	athlete = game.addChild(new Athlete(0));
 	athlete.restore();
 	// Initialize opponents
-	opponent1 = game.addChild(new Athlete());
-	opponent1.x = 400;
-	opponent1.y = groundLevel - 200 - 220;
+	opponent1 = game.addChild(new Athlete(1));
+	opponent1.restore();
 	gameState = GAME_STATE.PLAYING;
 	if (isDebug) {
 		// Debug Marker
 		debugMarker = LK.getAsset('debugMarker', {