===================================================================
--- original.js
+++ change.js
@@ -13,30 +13,29 @@
 	self.display.anchor.set(1, 0);
 	self.updateDisplay = function () {
 		self.display.setText('FPS: ' + Math.round(self.framerate).toString());
 	};
-	self.update = function () {
-		var currentTime = Date.now();
+	self.update = function (timestamp) {
+		if (!self.lastTime) {
+			self.lastTime = timestamp;
+		}
+		var delta = timestamp - self.lastTime;
 		self.frameCount++;
-		var elapsedTime = (currentTime - self.lastTime) / 1000;
-		if (elapsedTime >= 1) {
-			self.framerate = self.frameCount / elapsedTime;
+		if (delta >= 1000) {
+			self.framerate = self.frameCount;
 			self.updateDisplay();
 			self.frameCount = 0;
-			self.lastTime = currentTime;
+			self.lastTime = timestamp;
 		}
+		requestAnimationFrame(self.update);
 	};
 });
-var Bullet = Container.expand(function () {
-	var self = Container.call(this);
-	self.update = function () {};
-});
 var Plain = Container.expand(function () {
 	var self = Container.call(this);
 	var plainGraphics = self.createAsset('correct_plain_asset_id', 'Correct Plain Graphics Description', .5, .5);
 	plainGraphics.scale.x = 2;
 	plainGraphics.scale.y = 2;
-	plainGraphics.alpha = 0;
+	plainGraphics.alpha = 1;
 	self.shoot = function (enemies, bulletsContainer) {
 		if (self.cooldownTimer <= 0 && enemies.length > 0) {
 			var bullet = new Bullet(self);
 			bullet.x = self.x;
@@ -49,19 +48,17 @@
 });
 var Tower = Container.expand(function (gameInstance) {
 	var self = Container.call(this);
 	self.game = gameInstance;
+	self.game = gameInstance;
 	var towerGraphics = self.createAsset('tower', 'Tower Graphics', .5, .5);
-	self.cooldown = 0.625 / 0.7 * (1 / 0.6) * 1.3;
+	self.cooldown = 2.5;
 	self.cooldownTimer = 0;
 	self.shoot = function (enemies, bullets) {
-		this.handleShooting(enemies, bullets);
-	};
-	self.handleShooting = function (enemies, bullets) {
-		self.cooldownTimer--;
 		if (self.cooldownTimer <= 0 && enemies.length > 0) {
 			self.fireBullet(bullets);
 		}
+		self.cooldownTimer--;
 	};
 	self.fireBullet = function (bullets) {
 		var bullet = new Bullet(self.game);
 		bullet.x = self.x;
@@ -71,33 +68,27 @@
 		self.cooldownTimer = self.cooldown;
 	};
 });
 var Enemy = Container.expand(function (gameInstance) {
-	var self = Container.call(this, gameInstance);
+	var self = Container.call(this);
 	self.game = gameInstance;
 	var enemyGraphics = self.createAsset('enemy', 'Enemy Graphics', .5, .5);
-	var enemySpeed = 25.6 * 0.7 * 0.6;
 	self.move = function () {
-		self.y += enemySpeed;
+		self.y += 12.8;
 		if (self.y > 2732) {
-			self.game.removeEnemy(self);
+			self.destroy();
 		}
 	};
-	self.updatePosition = function () {
-		self.y += enemySpeed;
-		if (self.y > 2732) {
-			self.game.removeEnemy(self);
-		}
-	};
 });
-var EnemyBullet = Container.expand(function (gameInstance) {
+var Bullet = Container.expand(function (gameInstance) {
 	var self = Container.call(this);
 	self.game = gameInstance;
-	var bulletGraphics = self.createAsset('enemy_bullet', 'Enemy Bullet Graphics', .5, .5);
-	self.update = function () {
-		self.x += 240;
-		if (self.x > 2098) {
-			self.game.removeBullet(self);
+	self.game = gameInstance;
+	var bulletGraphics = self.createAsset('bullet', 'Bullet Graphics', .5, .5);
+	self.move = function () {
+		self.x += 120;
+		if (self.x > 2048) {
+			self.destroy();
 		}
 	};
 });
 
@@ -110,44 +101,40 @@
 
 /**** 
 * Game Code
 ****/
-game.incrementScore = function () {
-	game.score++;
-};
-game.removeEnemy = function (enemy) {
-	var index = game.enemies.indexOf(enemy);
-	if (index > -1) {
-		enemy.destroy();
-		game.enemies.splice(index, 1);
-	}
-};
-game.removeBullet = function (bullet) {
-	var index = game.bullets.indexOf(bullet);
-	if (index > -1) {
-		bullet.destroy();
-		game.bullets.splice(index, 1);
-	}
-};
 game.spawnEnemies = function () {
-	game.generateEnemies();
-};
-game.generateEnemies = function () {
-	game.enemiesSpawnedLastRound += 10;
-	for (var i = 0; i < game.enemiesSpawnedLastRound; i++) {
-		var newEnemy = new Enemy(game);
+	enemiesSpawnedLastRound += 6;
+	for (var i = 0; i < enemiesSpawnedLastRound; i++) {
+		var newEnemy = new Enemy();
 		newEnemy.x = Math.random() * 2048;
-		newEnemy.y = -25 * (i + 1);
+		newEnemy.y = -50 * (i + 1);
 		game.enemies.push(newEnemy);
 		game.addChild(newEnemy);
 	}
 	game.enemyCounterTxt.setText('Enemies: ' + game.enemies.length.toString());
 };
 game.updateEnemyCounter = function () {};
 game.score = 0;
+game.gold = 100;
+game.incrementScore = function () {
+	this.score++;
+};
 game.frameRateCounter = new FrameRateCounter();
 LK.gui.topRight.addChild(game.frameRateCounter.display);
 var enemiesSpawnedLastRound = 1;
+game.scoreTxt = new Text2(game.score.toString(), {
+	size: 150,
+	fill: "#ffffff"
+});
+game.scoreTxt.anchor.set(0.5, 0);
+LK.gui.topCenter.addChild(game.scoreTxt);
+game.goldTxt = new Text2(game.gold.toString(), {
+	size: 150,
+	fill: "#ffff00"
+});
+game.goldTxt.anchor.set(0, 0);
+LK.gui.topLeft.addChild(game.goldTxt);
 game.enemies = [];
 game.enemyCounterTxt = new Text2('Enemies: ' + game.enemies.length.toString(), {
 	size: 150,
 	fill: "#ff0000"
@@ -159,10 +146,10 @@
 game.bullets = [];
 game.bulletsContainer = game.addChild(new Container());
 game.enemies = [];
 var initialTower = new Tower(game);
-initialTower.x = 0 + initialTower.width / 2 - 260;
-initialTower.y = 500 + initialTower.height / 2 + 300 + 800 + 500;
+initialTower.x = 0 + initialTower.width / 2 - 130;
+initialTower.y = 500 + initialTower.height / 2 + 300;
 towers.push(initialTower);
 game.addChild(initialTower);
 var plain = game.addChild(new Plain());
 plain.x = 2048 / 2;
@@ -175,32 +162,46 @@
 game.addChild(enemy);
 game.on('down', function (obj) {
 	var event = obj.event;
 	var pos = event.getLocalPosition(game);
-	var newTower = new Tower(game);
-	newTower.x = pos.x;
-	newTower.y = pos.y;
-	game.addChild(newTower);
-	towers.push(newTower);
+	if (game.gold >= 50) {
+		var newTower = new Tower(game);
+		newTower.x = pos.x;
+		newTower.y = pos.y;
+		game.addChild(newTower);
+		towers.push(newTower);
+		game.gold -= 50;
+		game.goldTxt.setText(game.gold.toString());
+	}
 });
 LK.on('tick', function () {
-	game.frameRateCounter.update(enemiesSpawnedLastRound);
+	game.frameRateCounter.update();
 	if (game.enemies.length === 0) {
 		game.spawnEnemies();
+	} else {
+		towers.forEach(function (tower) {
+			tower.shoot(game.enemies, game.bullets);
+		});
 	}
-	towers.forEach(function (tower) {
-		tower.shoot(game.enemies, game.bullets);
-	});
-	var activeEnemies = game.enemies.filter(function (enemy) {
-		return enemy.y < 2732;
-	});
-	activeEnemies.forEach(function (enemy) {
+	game.enemies.forEach(function (enemy) {
 		enemy.move();
 	});
-	var activeBullets = game.bullets.filter(function (bullet) {
-		return bullet.x < 2048;
+	game.bullets.forEach(function (bullet, index) {
+		bullet.move();
+		for (var j = game.enemies.length - 1; j >= 0; j--) {
+			if (bullet.intersects(game.enemies[j])) {
+				game.enemies[j].destroy();
+				game.enemies.splice(j, 1);
+				game.incrementScore();
+				game.scoreTxt.setText(game.score.toString());
+				game.gold += 50;
+				bullet.destroy();
+				game.enemyCounterTxt.setText('Enemies: ' + game.enemies.length.toString());
+				break;
+			}
+		}
+		if (bullet.x > 2048) {
+			bullet.destroy();
+			game.bullets.splice(index, 1);
+		}
 	});
-	activeBullets.forEach(function (bullet) {
-		bullet.update();
-	});
-	game.bullets = activeBullets;
 });
\ No newline at end of file