===================================================================
--- original.js
+++ change.js
@@ -1,120 +1,160 @@
-/****
+/**** 
 * Classes
-****/
+****/ 
 // Bullet class
 var Bullet = Container.expand(function () {
-  var self = Container.call(this);
-  var bulletGraphics = self.attachAsset('bullet', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = -15;
-  self.update = function () {
-    self.y += self.speed;
-  };
+	var self = Container.call(this);
+	var bulletGraphics = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -15;
+	self.update = function () {
+		self.y += self.speed;
+	};
 });
 // Enemy class
 var Enemy = Container.expand(function () {
-  var self = Container.call(this);
-  var enemyGraphics = self.attachAsset('enemy', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = 5;
-  self.update = function () {
-    self.y += self.speed;
-  };
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 5;
+	self.update = function () {
+		self.y += self.speed;
+	};
 });
 //<Assets used in the game will automatically appear here>
 // Hero class
 var Hero = Container.expand(function () {
-  var self = Container.call(this);
-  var heroGraphics = self.attachAsset('hero', {
-    anchorX: 0.5,
-    anchorY: 0.5
-  });
-  self.speed = 10;
-  self.update = function () {
-    // Hero update logic
-  };
+	var self = Container.call(this);
+	var heroGraphics = self.attachAsset('hero', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 10;
+	self.update = function () {
+		// Hero update logic
+	};
 });
+// RobotDog class
+var RobotDog = Container.expand(function () {
+	var self = Container.call(this);
+	var robotDogGraphics = self.attachAsset('robotDog', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 7;
+	self.update = function () {
+		self.y += self.speed;
+	};
+});
 
-/****
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-  backgroundColor: 0x000000 //Init game with black background 
+	backgroundColor: 0x000000 //Init game with black background 
 });
 
-/****
+/**** 
 * Game Code
-****/
+****/ 
 // Initialize hero
 var hero = game.addChild(new Hero());
 hero.x = 2048 / 2;
 hero.y = 2732 - 200;
 // Initialize arrays for bullets and enemies
 var bullets = [];
 var enemies = [];
+var robotDogs = [];
 // Score display
 var scoreTxt = new Text2('0', {
-  size: 150,
-  fill: "#ffffff"
+	size: 150,
+	fill: "#ffffff"
 });
 scoreTxt.anchor.set(0.5, 0);
 LK.gui.top.addChild(scoreTxt);
 // Handle move events
 function handleMove(x, y, obj) {
-  hero.x = x;
-  hero.y = y;
+	hero.x = x;
+	hero.y = y;
 }
 game.move = handleMove;
 // Handle shooting
 game.down = function (x, y, obj) {
-  var newBullet = new Bullet();
-  newBullet.x = hero.x;
-  newBullet.y = hero.y;
-  bullets.push(newBullet);
-  game.addChild(newBullet);
+	var newBullet = new Bullet();
+	newBullet.x = hero.x;
+	newBullet.y = hero.y;
+	bullets.push(newBullet);
+	game.addChild(newBullet);
 };
 // Update game state
 game.update = function () {
-  // Update bullets
-  for (var i = bullets.length - 1; i >= 0; i--) {
-    bullets[i].update();
-    if (bullets[i].y < -50) {
-      bullets[i].destroy();
-      bullets.splice(i, 1);
-    }
-  }
-  // Update enemies
-  for (var j = enemies.length - 1; j >= 0; j--) {
-    enemies[j].update();
-    if (enemies[j].y > 2732 + 50) {
-      enemies[j].destroy();
-      enemies.splice(j, 1);
-    }
-  }
-  // Check for collisions
-  for (var k = bullets.length - 1; k >= 0; k--) {
-    for (var l = enemies.length - 1; l >= 0; l--) {
-      if (bullets[k].intersects(enemies[l])) {
-        bullets[k].destroy();
-        enemies[l].destroy();
-        bullets.splice(k, 1);
-        enemies.splice(l, 1);
-        LK.setScore(LK.getScore() + 1);
-        scoreTxt.setText(LK.getScore());
-        break;
-      }
-    }
-  }
-  // Spawn enemies
-  if (LK.ticks % 60 == 0) {
-    var newEnemy = new Enemy();
-    newEnemy.x = Math.random() * 2048;
-    newEnemy.y = -50;
-    enemies.push(newEnemy);
-    game.addChild(newEnemy);
-  }
+	// Update bullets
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		bullets[i].update();
+		if (bullets[i].y < -50) {
+			bullets[i].destroy();
+			bullets.splice(i, 1);
+		}
+	}
+	// Update enemies
+	for (var j = enemies.length - 1; j >= 0; j--) {
+		enemies[j].update();
+		if (enemies[j].y > 2732 + 50) {
+			enemies[j].destroy();
+			enemies.splice(j, 1);
+		}
+	}
+	// Update robotDogs
+	for (var m = robotDogs.length - 1; m >= 0; m--) {
+		robotDogs[m].update();
+		if (robotDogs[m].y > 2732 + 50) {
+			robotDogs[m].destroy();
+			robotDogs.splice(m, 1);
+		}
+	}
+	// Check for collisions
+	for (var k = bullets.length - 1; k >= 0; k--) {
+		for (var l = enemies.length - 1; l >= 0; l--) {
+			if (bullets[k].intersects(enemies[l])) {
+				bullets[k].destroy();
+				enemies[l].destroy();
+				bullets.splice(k, 1);
+				enemies.splice(l, 1);
+				LK.setScore(LK.getScore() + 1);
+				scoreTxt.setText(LK.getScore());
+				break;
+			}
+		}
+		for (var n = robotDogs.length - 1; n >= 0; n--) {
+			if (bullets[k].intersects(robotDogs[n])) {
+				bullets[k].destroy();
+				robotDogs[n].destroy();
+				bullets.splice(k, 1);
+				robotDogs.splice(n, 1);
+				LK.setScore(LK.getScore() + 2);
+				scoreTxt.setText(LK.getScore());
+				break;
+			}
+		}
+	}
+	// Spawn enemies
+	if (LK.ticks % 60 == 0) {
+		var newEnemy = new Enemy();
+		newEnemy.x = Math.random() * 2048;
+		newEnemy.y = -50;
+		enemies.push(newEnemy);
+		game.addChild(newEnemy);
+	}
+	// Spawn robotDogs
+	if (LK.ticks % 120 == 0) {
+		var newRobotDog = new RobotDog();
+		newRobotDog.x = Math.random() * 2048;
+		newRobotDog.y = -50;
+		robotDogs.push(newRobotDog);
+		game.addChild(newRobotDog);
+	}
 };
\ No newline at end of file