===================================================================
--- original.js
+++ change.js
@@ -1,14 +1,41 @@
 /**** 
 * Classes
 ****/
+var CooldownButton = Container.expand(function () {
+	var self = Container.call(this);
+	self.attachAsset('button', {
+		anchorX: 0.0,
+		// Bottom left anchor x-coordinate
+		anchorY: 1.0 // Bottom left anchor y-coordinate
+	});
+	self.x = 0; // Position x-coordinate at bottom left
+	self.y = 2732; // Position y-coordinate at bottom left
+	self.on('down', function () {
+		if (LK.getScore() >= 100) {
+			LK.setScore(LK.getScore() - 100);
+			hero.shootCooldown = Math.max(0, hero.shootCooldown - 15); // Reduce cooldown by 0.25 seconds (15 frames at 60FPS)
+		}
+	});
+});
+// Add CooldownButton to the game
+var Button = Container.expand(function () {
+	var self = Container.call(this);
+	self.attachAsset('button', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.on('down', function () {
+		LK.setScore(LK.getScore() - 100);
+		hero.shootCooldown = Math.max(0, hero.shootCooldown - 15); // 0.25 seconds at 60FPS
+	});
+});
 var Hero = Container.expand(function () {
 	var self = Container.call(this);
 	self.update = function () {
 		if (self.shootTimer > 0) {
 			self.shootTimer--;
 		}
-		self.speed = 6;
 	};
 	self.destroyMonsters = function () {
 		monsters.forEach(function (monster) {
 			monster.destroy();
@@ -20,21 +47,14 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = 5;
-	self.move = function (direction) {
-		if (direction === 'left') {
-			self.x -= self.speed;
-		}
-		if (direction === 'right') {
-			self.x += self.speed;
-		}
-		if (direction === 'up') {
-			self.y -= self.speed;
-		}
-		if (direction === 'down') {
-			self.y += self.speed;
-		}
+	self.move = function (targetX, targetY) {
+		var dx = targetX - self.x;
+		var dy = targetY - self.y;
+		var angle = Math.atan2(dy, dx);
+		self.x += Math.cos(angle) * self.speed;
+		self.y += Math.sin(angle) * self.speed;
 	};
 	self.shootCooldown = 120; // 2 seconds at 60FPS
 	self.shootTimer = 0;
 	self.shoot = function () {
@@ -48,29 +68,45 @@
 		}
 		return null;
 	};
 });
-// Add CooldownButton to the game
-var Button = Container.expand(function () {
+var StrongerMonster = Container.expand(function () {
 	var self = Container.call(this);
-	self.attachAsset('button', {
+	var monsterGraphics = self.attachAsset('strongMonster', {
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
-	self.on('down', function () {
-		if (LK.getScore() >= 100) {
-			LK.setScore(LK.getScore() - 100);
-			hero.shootCooldown = Math.max(0, hero.shootCooldown - 30); // 0.5 seconds at 60FPS
+	self.health = 5;
+	self.speed = 2;
+	self.hit = false;
+	self.hitTimer = 0;
+	self.update = function () {
+		if (self.hit) {
+			self.hitTimer--;
+			if (self.hitTimer <= 0) {
+				self.hit = false;
+			}
 		}
-	});
+	};
+	self.moveTowards = function (targetX, targetY) {
+		var dx = targetX - self.x;
+		var dy = targetY - self.y;
+		var angle = Math.atan2(dy, dx);
+		var newX = self.x + Math.cos(angle) * self.speed;
+		var newY = self.y + Math.sin(angle) * self.speed;
+		if (!self.hit) {
+			self.x = newX;
+			self.y = newY;
+		}
+	};
 });
 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.speed = 10;
 	self.move = function () {
 		self.y -= self.speed;
 	};
 });
@@ -82,8 +118,49 @@
 	});
 	self.x = 2048 / 2;
 	self.y = 128;
 });
+var WeakerMonster = Container.expand(function () {
+	var self = Container.call(this);
+	self.animationFrames = ['monster_walk1', 'monster_walk2', 'monster_walk3', 'monster_walk4'];
+	self.currentFrameIndex = 0;
+	self.frameCounter = 0;
+	self.frameChangeRate = 15; // Change frame every 15 ticks (1/4 second at 60FPS)
+	self.monsterGraphics = self.attachAsset(self.animationFrames[self.currentFrameIndex], {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.health = 2;
+	self.speed = 2;
+	self.hit = false;
+	self.hitTimer = 0;
+	self.update = function () {
+		if (self.hit) {
+			self.hitTimer--;
+			if (self.hitTimer <= 0) {
+				self.hit = false;
+			}
+		}
+		// Handle walking animation
+		self.frameCounter++;
+		if (self.frameCounter >= self.frameChangeRate) {
+			self.currentFrameIndex = (self.currentFrameIndex + 1) % self.animationFrames.length;
+			self.monsterGraphics.texture = LK.getAsset(self.animationFrames[self.currentFrameIndex], {}).texture;
+			self.frameCounter = 0;
+		}
+	};
+	self.moveTowards = function (targetX, targetY) {
+		var dx = targetX - self.x;
+		var dy = targetY - self.y;
+		var angle = Math.atan2(dy, dx);
+		var newX = self.x + Math.cos(angle) * self.speed;
+		var newY = self.y + Math.sin(angle) * self.speed;
+		if (!self.hit) {
+			self.x = newX;
+			self.y = newY;
+		}
+	};
+});
 
 /**** 
 * Initialize Game
 ****/
@@ -91,43 +168,15 @@
 
 /**** 
 * Game Code
 ****/
-// Joystick for hero movement
 // Add CooldownButton to the game
-var joystick = new Container();
-var joystickBase = joystick.attachAsset('button', {
-	anchorX: 0.5,
-	anchorY: 0.5,
-	x: 150,
-	y: 2732 - 150
-});
-var joystickKnob = joystick.attachAsset('button', {
-	anchorX: 0.5,
-	anchorY: 0.5,
-	x: 150,
-	y: 2732 - 150
-});
-joystickKnob.draggable = true;
 game.on('move', function (obj) {
-	var pos = obj.event.getLocalPosition(game);
-	var dx = pos.x - heroright.x;
-	var dy = pos.y - heroright.y;
-	var distance = Math.sqrt(dx * dx + dy * dy);
-	if (distance > heroright.speed) {
-		var angle = Math.atan2(dy, dx);
-		heroright.x += Math.cos(angle) * heroright.speed;
-		heroright.y += Math.sin(angle) * heroright.speed;
-	} else {
-		heroright.x = pos.x;
-		heroright.y = pos.y;
-	}
+	var event = obj.event;
+	var pos = event.getLocalPosition(game);
+	hero.move(pos.x, pos.y);
 });
-joystick.on('up', function (obj) {
-	joystickKnob.x = joystickBase.x;
-	joystickKnob.y = joystickBase.y;
-});
-game.addChild(joystick);
+var cooldownButton = game.addChild(new CooldownButton());
 var button = game.addChild(new Button());
 button.x = 100;
 button.y = 2732 - 100;
 // Score bar at the top
@@ -143,25 +192,46 @@
 	anchorY: 0.5,
 	x: 2048 / 2,
 	y: 2732 / 2
 });
-var heroright = game.addChild(new Hero());
-heroright.x = 2048 / 2;
-heroright.y = 2732 / 2;
+var hero = game.addChild(new Hero());
+hero.x = 2048 / 2;
+hero.y = 2732 / 2;
 // Add keyboard event listeners for arrow key movement and space for destroying monsters
+LK.on('keydown', function (obj) {
+	var event = obj.event;
+	switch (event.key) {
+		case 'ArrowLeft':
+			hero.move('left');
+			break;
+		case 'ArrowRight':
+			hero.move('right');
+			break;
+		case 'ArrowUp':
+			hero.move('up');
+			break;
+		case 'ArrowDown':
+			hero.move('down');
+			break;
+		case ' ':
+			// Space key
+			hero.destroyMonsters();
+			break;
+	}
+});
 var door = game.addChild(new Door());
 var monsters = [];
 var bullets = [];
 game.on('up', function (obj) {
-	bullets.push(heroright.shoot());
+	bullets.push(hero.shoot());
 });
 LK.on('tick', function () {
 	// Increment score every second
 	if (LK.ticks % 60 === 0) {
 		LK.setScore(LK.getScore() + 1);
 		scoreBar.setText(LK.getScore().toString());
 	}
-	heroright.update();
+	hero.update();
 	var spawnRate = LK.getScore() >= 80 ? 300 : LK.getScore() >= 50 ? 360 : 420;
 	var spawnWeakCounter = 0;
 	var spawnStrong = false;
 	var strongMonsterExists = false;
@@ -177,23 +247,56 @@
 		}
 	}
 	if (spawnDelayTimer > 0) {
 		spawnDelayTimer--;
-	} else if (spawnWeakCounter < 4 && LK.ticks % spawnRate === 0) {} else if (spawnWeakCounter >= 4 && !strongMonsterExists && spawnDelayTimer === 0) {
+	} else if (spawnWeakCounter < 4 && LK.ticks % spawnRate === 0) {
+		var monster = new WeakerMonster();
+		monster.x = door.x;
+		monster.y = door.y;
+		monsters.push(monster);
+		game.addChild(monster);
+		spawnWeakCounter++;
+	} else if (spawnWeakCounter >= 4 && !strongMonsterExists && spawnDelayTimer === 0) {
 		var strongMonster = new StrongerMonster();
 		strongMonster.x = door.x;
 		strongMonster.y = door.y;
 		monsters.push(strongMonster);
 		game.addChild(strongMonster);
 		strongMonsterExists = true;
 		spawnWeakCounter = 0;
 	}
+	monsters.forEach(function (monster, index) {
+		monster.update();
+		monster.moveTowards(hero.x, hero.y);
+		if (monster.intersects(hero)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+		}
+		if (monster instanceof StrongerMonster && monster.health <= 0) {
+			strongMonsterExists = false;
+		}
+	});
 	bullets.forEach(function (bullet, index) {
 		if (bullet) {
 			bullet.move();
 		}
 		if (bullet && bullet.y < 0) {
 			bullet.destroy();
 			bullets.splice(index, 1);
+		} else {
+			monsters.forEach(function (monster, mIndex) {
+				if (bullet && bullet.intersects(monster)) {
+					monster.health -= 1;
+					monster.hit = true;
+					monster.hitTimer = 30; // 0.5 seconds at 60FPS
+					if (monster.health <= 0) {
+						monster.destroy();
+						monsters.splice(mIndex, 1);
+						LK.setScore(LK.getScore() + 1);
+					}
+					bullet.destroy();
+					bullets.splice(index, 1);
+				}
+			});
 		}
 	});
 });
\ No newline at end of file