/**** 
* Classes
****/ 
// Boss class
var Boss = Container.expand(function () {
	var self = Container.call(this);
	var bossGraphics = self.attachAsset('boss', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5
	});
	self.speed = 2;
	self.horizontalSpeed = 2;
	self.health = 3;
	self.update = function () {
		if (self.y < 2732 / 3 - bossGraphics.height / 4) {
			self.y += self.speed;
		} else {
			self.x += self.horizontalSpeed;
			if (self.x > 2048 - bossGraphics.width * 0.75 || self.x < bossGraphics.width * 0.75) {
				self.horizontalSpeed = -self.horizontalSpeed;
			}
		}
	};
	self.shoot = function () {
		// Center laser
		var centerLaser = new EnemyLaser(self.x, self.y + bossGraphics.height * 0.75);
		game.addChild(centerLaser);
		enemyLasers.push(centerLaser);
		// Right side laser
		var rightLaser = new EnemyLaser(self.x + bossGraphics.width * 0.3, self.y + bossGraphics.height * 0.75);
		game.addChild(rightLaser);
		enemyLasers.push(rightLaser);
		// Left side laser
		var leftLaser = new EnemyLaser(self.x - bossGraphics.width * 0.3, self.y + bossGraphics.height * 0.75);
		game.addChild(leftLaser);
		enemyLasers.push(leftLaser);
	};
});
// EnemyLaser class
var EnemyLaser = Container.expand(function (x, y) {
	var self = Container.call(this);
	var enemyLaserGraphics = self.attachAsset('enemylaser', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5
	});
	self.x = x;
	self.y = y;
	self.speed = 10;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
});
// EnemyShip class
var EnemyShip = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemyship', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.destroy();
		}
	};
	self.shoot = function () {
		var enemyLaser = new EnemyLaser(self.x, self.y + enemyGraphics.height / 2);
		game.addChild(enemyLaser);
		enemyLasers.push(enemyLaser);
	};
});
// Laser class
var Laser = Container.expand(function (x, y) {
	var self = Container.call(this);
	var laserGraphics = self.attachAsset('laser', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.x = x;
	self.y = y;
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
		if (self.y < 0) {
			self.destroy();
		}
	};
});
//<Assets used in the game will automatically appear here>
// SpaceShip class
var SpaceShip = Container.expand(function () {
	var self = Container.call(this);
	var shipGraphics = self.attachAsset('spaceship', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		self.y = 2732 - 200;
	};
	self.shoot = function () {
		var laser = new Laser(self.x, self.y - shipGraphics.height / 2);
		game.addChild(laser);
		lasers.push(laser);
		LK.getSound('new_laser_sound_id').play();
	};
});
// Star class
var Star = Container.expand(function () {
	var self = Container.call(this);
	var starGraphics = self.attachAsset('star', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.y = -starGraphics.height;
			self.x = Math.random() * 2048;
		}
	};
});

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

/**** 
* Game Code
****/ 
// Removed incorrect sound play call
// Initialize arrays and variables
var spaceship;
var enemies = [];
var lasers = [];
var enemyLasers = [];
var stars = [];
var score = 0;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var boss = null;
// Create spaceship
spaceship = new SpaceShip();
spaceship.x = 2048 / 2;
spaceship.y = 2732 - 200;
game.addChild(spaceship);
// Create and add stars
for (var i = 0; i < 50; i++) {
	var star = new Star();
	star.x = Math.random() * 2048;
	star.y = Math.random() * 2732;
	stars.push(star);
	game.addChild(star);
}
// Spawn enemies
function spawnEnemy() {
	var enemy = new EnemyShip();
	enemy.x = Math.random() * 2048;
	enemy.y = -100;
	enemies.push(enemy);
	game.addChild(enemy);
}
// Handle game updates
game.update = function () {
	// Update spaceship
	spaceship.update();
	// Update stars
	for (var i = stars.length - 1; i >= 0; i--) {
		stars[i].update();
	}
	// Update lasers
	for (var i = lasers.length - 1; i >= 0; i--) {
		lasers[i].update();
		if (lasers[i].y < 0) {
			lasers[i].destroy();
			lasers.splice(i, 1);
		}
	}
	// Update enemy lasers
	for (var i = enemyLasers.length - 1; i >= 0; i--) {
		enemyLasers[i].update();
		if (enemyLasers[i].y > 2732) {
			enemyLasers[i].destroy();
			enemyLasers.splice(i, 1);
		}
	}
	// Update enemies
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
		if (enemies[i].y > 2732) {
			enemies[i].destroy();
			enemies.splice(i, 1);
		}
	}
	// Check for collisions
	for (var i = lasers.length - 1; i >= 0; i--) {
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (lasers[i].intersects(enemies[j])) {
				lasers[i].destroy();
				var destroyEffect = LK.getAsset('destroy', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: enemies[j].x,
					y: enemies[j].y
				});
				game.addChild(destroyEffect);
				LK.setTimeout(function () {
					destroyEffect.destroy();
				}, 200);
				LK.getSound('explosion').play();
				enemies[j].destroy();
				lasers.splice(i, 1);
				enemies.splice(j, 1);
				score++;
				scoreTxt.setText(score);
				if (score === 3 && !boss) {
					boss = new Boss();
					boss.x = 2048 / 2;
					boss.y = -boss.height;
					game.addChild(boss);
				}
				break;
			}
		}
		if (boss && boss.intersects && lasers[i].intersects(boss)) {
			lasers[i].destroy();
			var destroyEffect = LK.getAsset('destroy', {
				anchorX: 0.5,
				anchorY: 0.5,
				x: boss.x,
				y: boss.y
			});
			game.addChild(destroyEffect);
			LK.setTimeout(function () {
				destroyEffect.destroy();
			}, 200);
			LK.getSound('explosion').play();
			boss.health--;
			if (boss.health <= 0) {
				var kabomEffect = LK.getAsset('kabom', {
					anchorX: 0.5,
					anchorY: 0.5,
					x: boss.x,
					y: boss.y
				});
				game.addChild(kabomEffect);
				LK.setTimeout(function () {
					kabomEffect.destroy();
				}, 1000);
				LK.getSound('explosion').play();
				boss.destroy();
				boss = null;
			}
			lasers.splice(i, 1);
			score++;
			scoreTxt.setText(score);
			break;
		}
	}
	for (var i = enemyLasers.length - 1; i >= 0; i--) {
		if (enemyLasers[i].intersects(spaceship)) {
			enemyLasers[i].destroy();
			enemyLasers.splice(i, 1);
			// Flash screen red for 1 second (1000ms) to show we are dead.
			LK.effects.flashScreen(0xff0000, 1000);
			// Show game over. The game will be automatically paused while game over is showing.
			LK.showGameOver(); // Calling this will destroy the 'Game' and reset entire game state.
			break;
		}
	}
	// Spawn enemies periodically if boss is not present
	if (!boss && LK.ticks % 60 == 0) {
		spawnEnemy();
	}
	// Enemies shoot periodically if boss is not present
	if (!boss && LK.ticks % 120 == 0) {
		for (var i = 0; i < enemies.length; i++) {
			enemies[i].shoot();
		}
	}
	if (boss) {
		boss.update();
		if (LK.ticks % 60 == 0) {
			boss.shoot();
		}
	}
};
// Handle touch events
game.down = function (x, y, obj) {
	spaceship.shoot();
};
game.move = function (x, y, obj) {
	spaceship.x = x;
};
game.up = function (x, y, obj) {
	// No action needed on touch up
};

===================================================================
--- original.js
+++ change.js
@@ -11,9 +11,9 @@
 		scaleY: 1.5
 	});
 	self.speed = 2;
 	self.horizontalSpeed = 2;
-	self.health = 50;
+	self.health = 3;
 	self.update = function () {
 		if (self.y < 2732 / 3 - bossGraphics.height / 4) {
 			self.y += self.speed;
 		} else {