===================================================================
--- original.js
+++ change.js
@@ -13,10 +13,11 @@
 	};
 	self.update = function () {
 		var currentTime = Date.now();
 		self.frameCount++;
-		if (currentTime - self.lastTime >= 1000) {
-			self.framerate = self.frameCount;
+		var elapsedTime = (currentTime - self.lastTime) / 1000;
+		if (elapsedTime >= 1) {
+			self.framerate = self.frameCount / elapsedTime;
 			self.updateDisplay();
 			self.frameCount = 0;
 			self.lastTime = currentTime;
 		}
@@ -27,8 +28,18 @@
 	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;
+	self.shoot = function (enemies, bulletsContainer) {
+		if (self.cooldownTimer <= 0 && enemies.length > 0) {
+			var bullet = new Bullet(self);
+			bullet.x = self.x;
+			bullet.y = self.y;
+			bulletsContainer.addChild(bullet);
+			self.cooldownTimer = self.cooldown;
+		}
+		self.cooldownTimer--;
+	};
 });
 var Tower = Container.expand(function (gameInstance) {
 	var self = Container.call(this);
 	self.game = gameInstance;
@@ -59,33 +70,17 @@
 	var enemyGraphics = self.createAsset('enemy', 'Enemy Graphics', .5, .5);
 	var enemySpeed = 25.6 * 0.7 * 0.6;
 	self.move = function () {
 		self.y += enemySpeed;
-		if (self.y > LK.stageContainer.height - 50) {
-			self.checkBounds();
-		}
 	};
-	self.checkBounds = function () {
-		if (self.y > LK.stageContainer.height) {
-			self.destroy();
-		}
-	};
 });
 var Bullet = Container.expand(function (gameInstance) {
 	var self = Container.call(this);
 	self.game = gameInstance;
 	var bulletGraphics = self.createAsset('bullet', 'Bullet Graphics', .5, .5);
 	self.move = function () {
 		self.x += 240;
-		if (self.x > LK.stageContainer.width - 50) {
-			self.checkBounds();
-		}
 	};
-	self.checkBounds = function () {
-		if (self.x > LK.stageContainer.width) {
-			self.destroy();
-		}
-	};
 });
 var Game = Container.expand(function () {
 	var self = Container.call(this);
 	self.incrementScore = function () {
@@ -94,9 +89,9 @@
 	self.spawnEnemies = function () {
 		this.generateEnemies();
 	};
 	self.generateEnemies = function () {
-		enemiesSpawnedLastRound += 2;
+		enemiesSpawnedLastRound += 10;
 		for (var i = 0; i < enemiesSpawnedLastRound; i++) {
 			var newEnemy = new Enemy();
 			newEnemy.x = Math.random() * 2048;
 			newEnemy.y = -25 * (i + 1);
@@ -148,36 +143,31 @@
 	LK.on('tick', function () {
 		self.frameRateCounter.update(enemiesSpawnedLastRound);
 		if (self.enemies.length === 0) {
 			self.spawnEnemies();
+		} else {
+			towers.forEach(function (tower) {
+				tower.shoot(self.enemies, self.bullets);
+			});
 		}
-		towers.forEach(function (tower) {
-			tower.shoot(self.enemies, self.bullets);
-		});
-		self.enemies.forEach(function (enemy, i) {
+		self.enemies.forEach(function (enemy) {
 			enemy.move();
-			if (enemy.y > LK.stageContainer.height) {
-				enemy.destroy();
-				self.enemies.splice(i, 1);
-			}
 		});
-		self.bullets.forEach(function (bullet, i) {
+		self.bullets.forEach(function (bullet, index) {
 			bullet.move();
-			if (bullet.x > LK.stageContainer.width) {
+			for (var j = self.enemies.length - 1; j >= 0; j--) {
+				if (bullet.intersects(self.enemies[j])) {
+					self.enemies[j].destroy();
+					self.enemies.splice(j, 1);
+					self.incrementScore();
+					bullet.destroy();
+					self.enemyCounterTxt.setText('Enemies: ' + self.enemies.length.toString());
+					break;
+				}
+			}
+			if (bullet.x > 2048) {
 				bullet.destroy();
-				self.bullets.splice(i, 1);
-			} else {
-				self.enemies.forEach(function (enemy, j) {
-					if (bullet.intersects(enemy)) {
-						enemy.destroy();
-						self.enemies.splice(j, 1);
-						self.incrementScore();
-						bullet.destroy();
-						self.bullets.splice(i, 1);
-						return;
-					}
-				});
+				self.bullets.splice(index, 1);
 			}
 		});
-		self.enemyCounterTxt.setText('Enemies: ' + self.enemies.length.toString());
 	});
 });