===================================================================
--- original.js
+++ change.js
@@ -46,8 +46,64 @@
 	self.move = function () {
 		self.y += self.speed;
 	};
 });
+// Define the EnemyType1 class
+var EnemyType1 = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.createAsset('enemyType1', 'Enemy Type 1', 0.5, 0.5);
+	self.speed = 2;
+	self.health = 3;
+	self.move = function () {
+		self.y += self.speed;
+	};
+});
+// Define the EnemyType2 class
+var EnemyType2 = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.createAsset('enemyType2', 'Enemy Type 2', 0.5, 0.5);
+	self.speed = 4;
+	self.health = 2;
+	self.move = function () {
+		self.y += self.speed;
+	};
+});
+// Define the EnemyType3 class
+var EnemyType3 = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.createAsset('enemyType3', 'Enemy Type 3', 0.5, 0.5);
+	self.speed = 1;
+	self.health = 7;
+	self.move = function () {
+		self.y += self.speed;
+	};
+});
+// Define the EnemyType4 class
+var EnemyType4 = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.createAsset('enemyType4', 'Enemy Type 4', 0.5, 0.5);
+	self.speed = 3;
+	self.health = 4;
+	self.move = function () {
+		self.x += Math.sin(self.y / 100) * 10; // Sine wave movement
+		self.y += self.speed;
+	};
+});
+// Define the EnemyType5 class
+var EnemyType5 = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.createAsset('enemyType5', 'Enemy Type 5', 0.5, 0.5);
+	self.speed = 5;
+	self.health = 1;
+	self.move = function () {
+		if (self.x < 1024) {
+			self.x += self.speed;
+		} else {
+			self.x -= self.speed;
+		}
+		self.y += self.speed / 2;
+	};
+});
 
 /**** 
 * Initialize Game
 ****/