/**** 
* Classes
****/ 
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Check if bullet went off screen (transition from on-screen to off-screen)
		if (self.lastY >= -50 && self.y < -50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Check if enemy went off screen (transition from on-screen to off-screen)
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var FastEnemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('fastEnemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	enemyGraphics.tint = 0xff4444; // Red tint to differentiate
	self.speed = 6; // Faster than regular enemy
	self.update = function () {
		if (self.lastY === undefined) self.lastY = self.y;
		self.y += self.speed;
		// Check if enemy went off screen (transition from on-screen to off-screen)
		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
			self.shouldDestroy = true;
		}
		self.lastY = self.y;
	};
	return self;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('playerShip', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});

/**** 
* Initialize Game
****/ 
// Game variables
var game = new LK.Game({
	backgroundColor: 0x001122
});

/**** 
* Game Code
****/ 
// Game variables
var player;
var bullets = [];
var enemies = [];
var enemySpawnTimer = 0;
var enemySpawnRate = 60; // Frames between enemy spawns
var dragNode = null;
// Score display
var scoreTxt = new Text2('Score: 0', {
	size: 60,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Create player
player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 150; // Position near bottom of screen
// Touch/mouse controls
game.down = function (x, y, obj) {
	dragNode = player;
	player.x = x;
	// Shoot bullet
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y - 30;
	bullets.push(bullet);
	game.addChild(bullet);
	LK.getSound('shoot').play();
};
game.move = function (x, y, obj) {
	if (dragNode) {
		// Keep player within screen bounds
		dragNode.x = Math.max(40, Math.min(2048 - 40, x));
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
// Main game update loop
game.update = function () {
	// Update bullets
	for (var i = bullets.length - 1; i >= 0; i--) {
		var bullet = bullets[i];
		if (bullet.shouldDestroy) {
			bullet.destroy();
			bullets.splice(i, 1);
			continue;
		}
		// Check bullet vs enemy collisions
		for (var j = enemies.length - 1; j >= 0; j--) {
			var enemy = enemies[j];
			if (bullet.intersects(enemy)) {
				// Destroy both bullet and enemy
				bullet.destroy();
				bullets.splice(i, 1);
				enemy.destroy();
				enemies.splice(j, 1);
				// Increase score - more points for fast enemies
				var points = enemy instanceof FastEnemy ? 20 : 10;
				LK.setScore(LK.getScore() + points);
				scoreTxt.setText('Score: ' + LK.getScore());
				LK.getSound('enemyHit').play();
				break;
			}
		}
	}
	// Update enemies
	for (var k = enemies.length - 1; k >= 0; k--) {
		var enemy = enemies[k];
		if (enemy.shouldDestroy) {
			enemy.destroy();
			enemies.splice(k, 1);
			continue;
		}
		// Check enemy vs player collision
		if (enemy.intersects(player)) {
			// Game Over
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			return;
		}
	}
	// Spawn enemies
	enemySpawnTimer++;
	if (enemySpawnTimer >= enemySpawnRate) {
		enemySpawnTimer = 0;
		var enemy;
		// 30% chance to spawn fast enemy
		if (Math.random() < 0.3) {
			enemy = new FastEnemy();
		} else {
			enemy = new Enemy();
		}
		enemy.x = Math.random() * (2048 - 120) + 60; // Random X position within bounds
		enemy.y = -30; // Start above screen
		enemies.push(enemy);
		game.addChild(enemy);
		// Gradually increase difficulty
		if (enemySpawnRate > 20) {
			enemySpawnRate -= 0.5;
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -36,8 +36,27 @@
 		self.lastY = self.y;
 	};
 	return self;
 });
+var FastEnemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('fastEnemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	enemyGraphics.tint = 0xff4444; // Red tint to differentiate
+	self.speed = 6; // Faster than regular enemy
+	self.update = function () {
+		if (self.lastY === undefined) self.lastY = self.y;
+		self.y += self.speed;
+		// Check if enemy went off screen (transition from on-screen to off-screen)
+		if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) {
+			self.shouldDestroy = true;
+		}
+		self.lastY = self.y;
+	};
+	return self;
+});
 var Player = Container.expand(function () {
 	var self = Container.call(this);
 	var playerGraphics = self.attachAsset('playerShip', {
 		anchorX: 0.5,
@@ -114,10 +133,11 @@
 				bullet.destroy();
 				bullets.splice(i, 1);
 				enemy.destroy();
 				enemies.splice(j, 1);
-				// Increase score
-				LK.setScore(LK.getScore() + 10);
+				// Increase score - more points for fast enemies
+				var points = enemy instanceof FastEnemy ? 20 : 10;
+				LK.setScore(LK.getScore() + points);
 				scoreTxt.setText('Score: ' + LK.getScore());
 				LK.getSound('enemyHit').play();
 				break;
 			}
@@ -142,9 +162,15 @@
 	// Spawn enemies
 	enemySpawnTimer++;
 	if (enemySpawnTimer >= enemySpawnRate) {
 		enemySpawnTimer = 0;
-		var enemy = new Enemy();
+		var enemy;
+		// 30% chance to spawn fast enemy
+		if (Math.random() < 0.3) {
+			enemy = new FastEnemy();
+		} else {
+			enemy = new Enemy();
+		}
 		enemy.x = Math.random() * (2048 - 120) + 60; // Random X position within bounds
 		enemy.y = -30; // Start above screen
 		enemies.push(enemy);
 		game.addChild(enemy);