/**** 
* Classes
****/ 
// Class for bullets
var Bullet = Container.expand(function (startX, startY) {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 0.5,
		scaleY: 0.5
	});
	self.x = startX;
	self.y = startY;
	self.speed = -10;
	self.update = function () {
		self.y += self.speed;
		if (self.y < -50) {
			self.destroy();
			bullets.splice(bullets.indexOf(self), 1);
		}
	};
});
// Class for enemies
var Enemy = Container.expand(function (type) {
	var self = Container.call(this);
	var enemyGraphics;
	if (type === 'boss') {
		enemyGraphics = self.attachAsset('enemy', {
			anchorX: 0.5,
			anchorY: 0.5,
			scaleX: 2,
			scaleY: 2,
			shape: 'ellipse'
		});
	} else {
		enemyGraphics = self.attachAsset('enemy', {
			anchorX: 0.5,
			anchorY: 0.5
		});
	}
	self.x = Math.random() * 2048;
	self.y = -100;
	self.speed = 2 + level * 0.5;
	self.health = type === 'boss' ? 10 : 1;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
			enemies.splice(enemies.indexOf(self), 1);
		}
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Class for the player's paintball shooter
var Shooter = Container.expand(function () {
	var self = Container.call(this);
	var shooterGraphics = self.attachAsset('shooter', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.shoot = function () {
		var bullet = new Bullet(self.x, self.y);
		game.addChild(bullet);
		bullets.push(bullet);
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background 
});

/**** 
* Game Code
****/ 
var shooter = new Shooter();
shooter.x = 1024;
shooter.y = 2500;
game.addChild(shooter);
var bullets = [];
var enemies = [];
var level = 1;
var enemyCount = 0;
game.update = function () {
	if (LK.ticks % 60 === 0) {
		if (enemyCount < 15) {
			var enemy = new Enemy('normal');
			game.addChild(enemy);
			enemies.push(enemy);
			enemyCount++;
		} else if (enemyCount === 15) {
			var boss = new Enemy('boss');
			game.addChild(boss);
			enemies.push(boss);
			enemyCount++;
		}
	}
	bullets.forEach(function (bullet) {
		bullet.update();
	});
	enemies.forEach(function (enemy) {
		enemy.update();
		bullets.forEach(function (bullet) {
			if (bullet.intersects(enemy)) {
				enemy.health--;
				bullet.destroy();
				bullets.splice(bullets.indexOf(bullet), 1);
				if (enemy.health <= 0) {
					enemy.destroy();
					enemies.splice(enemies.indexOf(enemy), 1);
					if (enemyCount > 15) {
						level++;
						enemyCount = 0;
					}
				}
			}
		});
	});
};
game.down = function (x, y, obj) {
	shooter.shoot();
};
game.move = function (x, y, obj) {
	shooter.x = x;
};

===================================================================
--- original.js
+++ change.js
@@ -5,9 +5,11 @@
 var Bullet = Container.expand(function (startX, startY) {
 	var self = Container.call(this);
 	var bulletGraphics = self.attachAsset('bullet', {
 		anchorX: 0.5,
-		anchorY: 0.5
+		anchorY: 0.5,
+		scaleX: 0.5,
+		scaleY: 0.5
 	});
 	self.x = startX;
 	self.y = startY;
 	self.speed = -10;