===================================================================
--- original.js
+++ change.js
@@ -1,7 +1,16 @@
 /**** 
 * Classes
 ****/
+// Define the EnemyBullet class
+var EnemyBullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletGraphics = self.createAsset('enemyBullet', 'Enemy Bullet', 0.5, 0.5);
+	self.speed = 5;
+	self.move = function () {
+		self.y += self.speed;
+	};
+});
 // Define the DimStar class for stars with lower brightness
 var DimStar = Container.expand(function () {
 	var self = Container.call(this);
 	var starGraphics = self.createAsset('dimStar', 'Dim Star', 0.5, 0.5);
@@ -66,11 +75,23 @@
 	var self = Container.call(this);
 	var enemyGraphics = self.createAsset('enemyType1', 'Enemy Type 1', 0.5, 0.5);
 	self.speed = 2;
 	self.health = 3;
+	self.shootInterval = 120; // Enemy shoots every 2 seconds
+	self.lastShotTick = 0; // Last tick when the enemy shot
 	self.move = function () {
 		self.y += self.speed;
 	};
+	self.shoot = function () {
+		if (LK.ticks - self.lastShotTick >= self.shootInterval) {
+			var newEnemyBullet = new EnemyBullet();
+			newEnemyBullet.x = self.x;
+			newEnemyBullet.y = self.y + self.height / 2;
+			game.addChild(newEnemyBullet);
+			enemyBullets.push(newEnemyBullet);
+			self.lastShotTick = LK.ticks;
+		}
+	};
 });
 // Define the EnemyType2 class
 var EnemyType2 = Container.expand(function () {
 	var self = Container.call(this);
@@ -214,8 +235,9 @@
 // Initialize important asset arrays
 var meteors = [];
 var aliens = [];
 var heroBullets = [];
+var enemyBullets = [];
 // Create the Space Ranger
 var spaceRanger = game.addChild(new SpaceRanger());
 spaceRanger.x = 2048 / 2;
 spaceRanger.y = 2732 - 200; // Start position near the bottom of the screen
@@ -239,16 +261,37 @@
 			meteors[i].destroy();
 			meteors.splice(i, 1);
 		}
 	}
-	// Move all aliens
+	// Move all aliens and make them shoot if they are of EnemyType1
 	for (var j = aliens.length - 1; j >= 0; j--) {
 		aliens[j].move();
+		if (aliens[j] instanceof EnemyType1) {
+			aliens[j].shoot();
+		}
 		if (aliens[j].y > 2732 + aliens[j].height / 2) {
 			aliens[j].destroy();
 			aliens.splice(j, 1);
 		}
 	}
+	// Move all enemy bullets
+	for (var p = enemyBullets.length - 1; p >= 0; p--) {
+		enemyBullets[p].move();
+		if (enemyBullets[p].y > 2732 + enemyBullets[p].height / 2) {
+			enemyBullets[p].destroy();
+			enemyBullets.splice(p, 1);
+		} else if (spaceRanger.intersects(enemyBullets[p])) {
+			spaceRanger.lives--;
+			livesDisplay.updateLives(spaceRanger.lives);
+			LK.effects.flashScreen(0xff0000, 500);
+			if (spaceRanger.lives <= 0) {
+				LK.showGameOver();
+				return;
+			}
+			enemyBullets[p].destroy();
+			enemyBullets.splice(p, 1);
+		}
+	}
 	// Move all hero bullets
 	for (var k = heroBullets.length - 1; k >= 0; k--) {
 		heroBullets[k].move();
 		if (heroBullets[k].y < -heroBullets[k].height / 2) {