===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,305 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Barrel = Container.expand(function () {
+	var self = Container.call(this);
+	var barrelGraphics = self.attachAsset('barrel', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.exploded = false;
+	self.explosionRadius = 120;
+	self.explode = function () {
+		if (self.exploded) return;
+		self.exploded = true;
+		LK.getSound('explosion').play();
+		LK.effects.flashObject(self, 0xFF4500, 800);
+		// Damage nearby zombies
+		for (var i = 0; i < zombies.length; i++) {
+			var zombie = zombies[i];
+			var distance = Math.sqrt(Math.pow(zombie.x - self.x, 2) + Math.pow(zombie.y - self.y, 2));
+			if (distance <= self.explosionRadius && !zombie.isDead) {
+				zombie.takeDamage();
+			}
+		}
+		tween(self, {
+			alpha: 0,
+			scaleX: 2,
+			scaleY: 2
+		}, {
+			duration: 800,
+			onFinish: function onFinish() {
+				// Remove from barrels array
+				for (var j = 0; j < barrels.length; j++) {
+					if (barrels[j] === self) {
+						barrels.splice(j, 1);
+						break;
+					}
+				}
+			}
+		});
+	};
+	return self;
+});
+var Bullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.velocityX = 0;
+	self.velocityY = 0;
+	self.speed = 15;
+	self.bounces = 0;
+	self.maxBounces = 5;
+	self.active = true;
+	self.update = function () {
+		if (!self.active) return;
+		self.x += self.velocityX;
+		self.y += self.velocityY;
+		// Check wall collisions and bounce
+		if (self.x <= 10 && self.velocityX < 0) {
+			self.velocityX = -self.velocityX;
+			self.bounces++;
+		}
+		if (self.x >= 2038 && self.velocityX > 0) {
+			self.velocityX = -self.velocityX;
+			self.bounces++;
+		}
+		if (self.y <= 10 && self.velocityY < 0) {
+			self.velocityY = -self.velocityY;
+			self.bounces++;
+		}
+		if (self.y >= 2722 && self.velocityY > 0) {
+			self.velocityY = -self.velocityY;
+			self.bounces++;
+		}
+		// Check wall object collisions
+		for (var i = 0; i < walls.length; i++) {
+			var wall = walls[i];
+			if (self.intersects(wall)) {
+				// Simple bounce logic - reverse direction
+				var centerX = wall.x + wall.width / 2;
+				var centerY = wall.y + wall.height / 2;
+				if (Math.abs(self.x - centerX) > Math.abs(self.y - centerY)) {
+					self.velocityX = -self.velocityX;
+				} else {
+					self.velocityY = -self.velocityY;
+				}
+				self.bounces++;
+				break;
+			}
+		}
+		// Remove bullet after too many bounces
+		if (self.bounces > self.maxBounces) {
+			self.active = false;
+		}
+	};
+	return self;
+});
+var Zombie = Container.expand(function () {
+	var self = Container.call(this);
+	var zombieGraphics = self.attachAsset('zombie', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.health = 1;
+	self.isDead = false;
+	self.takeDamage = function () {
+		if (self.isDead) return;
+		self.health--;
+		if (self.health <= 0) {
+			self.isDead = true;
+			LK.getSound('zombieDeath').play();
+			LK.effects.flashObject(self, 0xFF0000, 500);
+			tween(self, {
+				alpha: 0,
+				scaleX: 0.1,
+				scaleY: 0.1
+			}, {
+				duration: 500,
+				onFinish: function onFinish() {
+					zombiesKilled++;
+					checkWinCondition();
+				}
+			});
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2F4F4F
+});
+
+/**** 
+* Game Code
+****/ 
+var player;
+var bullets = [];
+var zombies = [];
+var walls = [];
+var barrels = [];
+var bulletsRemaining = 3;
+var totalZombies = 0;
+var zombiesKilled = 0;
+var gameWon = false;
+var gameLost = false;
+var aimLine = null;
+var aiming = false;
+var aimStartX = 0;
+var aimStartY = 0;
+// UI Elements
+var bulletsText = new Text2('Bullets: 3', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+bulletsText.anchor.set(0, 0);
+bulletsText.x = 120;
+bulletsText.y = 50;
+LK.gui.topLeft.addChild(bulletsText);
+var zombiesText = new Text2('Zombies: 0', {
+	size: 80,
+	fill: 0xFFFFFF
+});
+zombiesText.anchor.set(1, 0);
+LK.gui.topRight.addChild(zombiesText);
+// Create player
+player = game.addChild(new Container());
+var playerGraphics = player.attachAsset('player', {
+	anchorX: 0.5,
+	anchorY: 0.5
+});
+player.x = 200;
+player.y = 2500;
+// Create level walls
+function createWall(x, y, width, height) {
+	var wall = game.addChild(new Container());
+	var wallGraphics = wall.attachAsset('wall', {
+		anchorX: 0,
+		anchorY: 0,
+		width: width,
+		height: height
+	});
+	wall.x = x;
+	wall.y = y;
+	wall.width = width;
+	wall.height = height;
+	walls.push(wall);
+	return wall;
+}
+// Create level layout - simple first level
+createWall(800, 1800, 400, 50);
+createWall(1400, 1400, 300, 50);
+createWall(600, 1000, 200, 50);
+// Create zombies
+function createZombie(x, y) {
+	var zombie = game.addChild(new Zombie());
+	zombie.x = x;
+	zombie.y = y;
+	zombies.push(zombie);
+	totalZombies++;
+}
+createZombie(900, 1750);
+createZombie(1500, 1350);
+createZombie(700, 950);
+// Create barrels
+function createBarrel(x, y) {
+	var barrel = game.addChild(new Barrel());
+	barrel.x = x;
+	barrel.y = y;
+	barrels.push(barrel);
+}
+createBarrel(1100, 1750);
+// Update UI
+zombiesText.setText('Zombies: ' + totalZombies);
+function checkWinCondition() {
+	if (zombiesKilled >= totalZombies && !gameWon) {
+		gameWon = true;
+		LK.setTimeout(function () {
+			LK.showYouWin();
+		}, 1000);
+	}
+}
+function checkLoseCondition() {
+	if (bulletsRemaining <= 0 && bullets.length === 0 && zombiesKilled < totalZombies && !gameLost) {
+		gameLost = true;
+		LK.setTimeout(function () {
+			LK.showGameOver();
+		}, 1000);
+	}
+}
+function fireBullet(targetX, targetY) {
+	if (bulletsRemaining <= 0 || aiming === false) return;
+	var bullet = game.addChild(new Bullet());
+	bullet.x = player.x;
+	bullet.y = player.y;
+	var deltaX = targetX - player.x;
+	var deltaY = targetY - player.y;
+	var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
+	bullet.velocityX = deltaX / distance * bullet.speed;
+	bullet.velocityY = deltaY / distance * bullet.speed;
+	bullets.push(bullet);
+	bulletsRemaining--;
+	bulletsText.setText('Bullets: ' + bulletsRemaining);
+	LK.getSound('shoot').play();
+	aiming = false;
+}
+// Event handlers
+game.down = function (x, y, obj) {
+	if (gameWon || gameLost) return;
+	aiming = true;
+	aimStartX = x;
+	aimStartY = y;
+};
+game.move = function (x, y, obj) {
+	if (!aiming || gameWon || gameLost) return;
+	// Visual feedback for aiming could be added here
+};
+game.up = function (x, y, obj) {
+	if (!aiming || gameWon || gameLost) return;
+	fireBullet(x, y);
+};
+game.update = function () {
+	if (gameWon || gameLost) return;
+	// Update bullets
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		var bullet = bullets[i];
+		if (!bullet.active) {
+			bullet.destroy();
+			bullets.splice(i, 1);
+			continue;
+		}
+		// Check zombie collisions
+		for (var j = 0; j < zombies.length; j++) {
+			var zombie = zombies[j];
+			if (!zombie.isDead && bullet.intersects(zombie)) {
+				zombie.takeDamage();
+				bullet.active = false;
+				break;
+			}
+		}
+		// Check barrel collisions
+		for (var k = 0; k < barrels.length; k++) {
+			var barrel = barrels[k];
+			if (!barrel.exploded && bullet.intersects(barrel)) {
+				barrel.explode();
+				bullet.active = false;
+				break;
+			}
+		}
+		// Remove bullets that go off screen
+		if (bullet.x < -50 || bullet.x > 2098 || bullet.y < -50 || bullet.y > 2782) {
+			bullet.active = false;
+		}
+	}
+	checkLoseCondition();
+};
\ No newline at end of file