var Particle = Container.expand(function () {
	var self = Container.call(this);
	var particleGraphics = self.createAsset('particle', 'Particle Graphics', .5, .5);
	self.speed = Math.random() * 5 + 2;
	self.direction = Math.random() * Math.PI * 2;
	self.alpha = 1;
	self.move = function () {
		self.x += Math.cos(self.direction) * self.speed;
		self.y += Math.sin(self.direction) * self.speed;
		self.alpha -= 0.02;
		if (self.alpha <= 0) self.destroy();
	};
});
var Projectile = Container.expand(function () {
	var self = Container.call(this);
	var projectileGraphics = self.createAsset('projectile', 'Projectile Graphics', .5, .5);
	self.speed = 14;
	self.direction = '';
	self.move = function () {
		if (self.direction === 'up') self.y -= self.speed;
		if (self.direction === 'down') self.y += self.speed;
		if (self.direction === 'left') self.x -= self.speed;
		if (self.direction === 'right') self.x += self.speed;
	};
});
var Target = Container.expand(function () {
	var self = Container.call(this);
	var targetGraphics = self.createAsset('target', 'Target Graphics', .5, .5);
	self.speed = 7;
	self.direction = Math.random() < 0.5 ? 'horizontal' : 'vertical';
	self.move = function () {
		if (self.direction === 'horizontal') {
			self.x += self.speed;
			if (self.x > 2048) self.x = 0;
			if (self.x < 0) self.x = 2048;
		} else {
			self.y += self.speed;
			if (self.y > 2732) self.y = 0;
			if (self.y < 0) self.y = 2732;
		}
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	self.level = 1;
	self.touchesLeft = 5;
	self.targetsLeft = 5;
	var levelCompleteText = new Text2('', {
		size: 70,
		fill: '#ffffff'
	});
	levelCompleteText.anchor.set(0.5, 0.5);
	levelCompleteText.x = 2048 / 2;
	levelCompleteText.y = 2732 / 2;
	LK.gui.center.addChild(levelCompleteText);
	var levelText = new Text2('Level: ' + self.level, {
		size: 70,
		fill: "#ffffff"
	});
	levelText.anchor.set(0, 0);
	LK.gui.topLeft.addChild(levelText);
	var touchesLeftText = new Text2('Touches Left: ' + self.touchesLeft, {
		size: 70,
		fill: "#ffffff"
	});
	touchesLeftText.anchor.set(0, 0);
	touchesLeftText.y = 120;
	LK.gui.topLeft.addChild(touchesLeftText);
	var targetsLeftText = new Text2('Targets Left: ' + self.targetsLeft, {
		size: 70,
		fill: "#ffffff"
	});
	targetsLeftText.anchor.set(0, 0);
	targetsLeftText.y = 240;
	LK.gui.topLeft.addChild(targetsLeftText);
	var enemyBullets = [];
	var enemies = [];
	var targets = [];
	var touchesLeft = 5;
	for (var i = 0; i < 5; i++) {
		var target = new Target();
		target.x = Math.random() * 2048;
		target.y = Math.random() * 2732;
		targets.push(target);
		self.addChild(target);
	}
	var spawnEnemy = function () {
		var enemy = new Enemy();
		enemy.x = Math.random() * 2048;
		enemy.y = 0;
		enemies.push(enemy);
		self.addChild(enemy);
	};
	var fireEnemyBullet = function (enemy) {
		var bullet = new EnemyBullet();
		bullet.x = enemy.x;
		bullet.y = enemy.y;
		enemyBullets.push(bullet);
		self.addChild(bullet);
	};
	LK.on('tick', function () {
		for (var i = 0; i < targets.length; i++) {
			targets[i].move();
		}
		for (var i = 0; i < self.children.length; i++) {
			if (self.children[i] instanceof Projectile || self.children[i] instanceof Particle) {
				self.children[i].move();
				for (var j = 0; j < targets.length; j++) {
					if (self.children[i] && targets[j] && self.children[i].intersects(targets[j])) {
						var directions = ['up', 'down', 'left', 'right'];
						for (var k = 0; k < 4; k++) {
							var newProjectile = new Projectile();
							newProjectile.x = targets[j].x;
							newProjectile.y = targets[j].y;
							newProjectile.direction = directions[k];
							self.addChild(newProjectile);
						}
						self.children[i].destroy();
						for (var k = 0; k < 30; k++) {
							var particle = new Particle();
							particle.x = targets[j].x;
							particle.y = targets[j].y;
							self.addChild(particle);
						}
						targets[j].destroy();
						self.targetsLeft--;
						targets.splice(j, 1);
						targetsLeftText.setText('Targets Left: ' + self.targetsLeft);
						if (self.targetsLeft === 0) {
							levelCompleteText.setText('Level Complete!');
						}
					}
				}
			}
		}
	});
	stage.on('down', function (obj) {
		if (touchesLeft > 0) {
			var pos = obj.event.getLocalPosition(self);
			var directions = ['up', 'down', 'left', 'right'];
			for (var i = 0; i < 4; i++) {
				var projectile = new Projectile();
				projectile.x = pos.x;
				projectile.y = pos.y;
				projectile.direction = directions[i];
				self.addChild(projectile);
			}
			if (self.touchesLeft > 0) {
				self.touchesLeft--;
				touchesLeftText.setText('Touches Left: ' + self.touchesLeft);
			}
		}
	});
});

===================================================================
--- original.js
+++ change.js