===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,261 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+// Bullet class
+var Bullet = Container.expand(function () {
+	var self = Container.call(this);
+	var bulletAsset = self.attachAsset('bullet', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = bulletAsset.width / 2;
+	self.speed = -18;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Enemy class
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyAsset = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = enemyAsset.width / 2;
+	self.speed = 3 + Math.random() * 2; // Speed increases with waves
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+// Hero class
+var Hero = Container.expand(function () {
+	var self = Container.call(this);
+	var heroAsset = self.attachAsset('hero', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = heroAsset.width / 2;
+	self.weaponLevel = 1; // 1: single, 2: double, 3: triple, etc.
+	// For touch drag
+	self.down = function (x, y, obj) {};
+	self.up = function (x, y, obj) {};
+	self.move = function (x, y, obj) {};
+	return self;
+});
+// Obstacle class
+var Obstacle = Container.expand(function () {
+	var self = Container.call(this);
+	var obsAsset = self.attachAsset('obstacle', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.radius = obsAsset.width / 2;
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x181818
+});
+
+/**** 
+* Game Code
+****/ 
+// --- Game Variables ---
+// --- Asset Initialization ---
+var hero;
+var enemies = [];
+var bullets = [];
+var obstacles = [];
+var dragNode = null;
+var lastScore = 0;
+var kills = 0;
+var wave = 1;
+var spawnTimer = 0;
+var weaponLevel = 1;
+var scoreTxt;
+// --- UI ---
+scoreTxt = new Text2('0', {
+	size: 120,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+// --- Place Obstacles ---
+function placeObstacles() {
+	// Clear old
+	for (var i = 0; i < obstacles.length; i++) {
+		obstacles[i].destroy();
+	}
+	obstacles = [];
+	// Place 3 obstacles in the arena, not blocking the hero spawn
+	var obsY = [900, 1500, 2100];
+	for (var i = 0; i < 3; i++) {
+		var obs = new Obstacle();
+		obs.x = 2048 / 2 + (i - 1) * 500;
+		obs.y = obsY[i];
+		obstacles.push(obs);
+		game.addChild(obs);
+	}
+}
+// --- Spawn Hero ---
+function spawnHero() {
+	hero = new Hero();
+	hero.x = 2048 / 2;
+	hero.y = 2732 - 300;
+	game.addChild(hero);
+	weaponLevel = 1;
+	hero.weaponLevel = 1;
+}
+// --- Spawn Enemy ---
+function spawnEnemy() {
+	var enemy = new Enemy();
+	enemy.x = 300 + Math.random() * (2048 - 600);
+	enemy.y = -120;
+	enemies.push(enemy);
+	game.addChild(enemy);
+}
+// --- Fire Bullets ---
+function fireBullets() {
+	var bulletCount = weaponLevel;
+	var spread = 60; // px between bullets
+	var baseX = hero.x - (bulletCount - 1) * spread / 2;
+	for (var i = 0; i < bulletCount; i++) {
+		var bullet = new Bullet();
+		bullet.x = baseX + i * spread;
+		bullet.y = hero.y - hero.radius - 20;
+		bullets.push(bullet);
+		game.addChild(bullet);
+	}
+}
+// --- Touch Controls ---
+function handleMove(x, y, obj) {
+	if (dragNode) {
+		// Clamp hero inside arena
+		var minX = hero.radius + 20;
+		var maxX = 2048 - hero.radius - 20;
+		var minY = hero.radius + 200;
+		var maxY = 2732 - hero.radius - 20;
+		dragNode.x = Math.max(minX, Math.min(maxX, x));
+		dragNode.y = Math.max(minY, Math.min(maxY, y));
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	// Only drag if touch is on hero
+	var dx = x - hero.x;
+	var dy = y - hero.y;
+	if (dx * dx + dy * dy < hero.radius * hero.radius * 1.2) {
+		dragNode = hero;
+		handleMove(x, y, obj);
+	}
+};
+game.up = function (x, y, obj) {
+	dragNode = null;
+};
+// --- Game Update ---
+game.update = function () {
+	// --- Bullets ---
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		var b = bullets[i];
+		b.update();
+		// Remove offscreen
+		if (b.y < -50) {
+			b.destroy();
+			bullets.splice(i, 1);
+			continue;
+		}
+		// Collide with obstacles
+		var hitObs = false;
+		for (var j = 0; j < obstacles.length; j++) {
+			if (b.intersects(obstacles[j])) {
+				b.destroy();
+				bullets.splice(i, 1);
+				hitObs = true;
+				break;
+			}
+		}
+		if (hitObs) continue;
+		// Collide with enemies
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			if (b.intersects(enemies[j])) {
+				// Destroy both
+				b.destroy();
+				bullets.splice(i, 1);
+				enemies[j].destroy();
+				enemies.splice(j, 1);
+				kills++;
+				LK.setScore(LK.getScore() + 1);
+				scoreTxt.setText(LK.getScore());
+				// Weapon upgrade
+				if (kills % 10 === 0) {
+					weaponLevel++;
+					hero.weaponLevel = weaponLevel;
+					LK.effects.flashObject(hero, 0x00ff00, 600);
+				}
+				break;
+			}
+		}
+	}
+	// --- Enemies ---
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var e = enemies[i];
+		e.update();
+		// Collide with obstacles
+		var hitObs = false;
+		for (var j = 0; j < obstacles.length; j++) {
+			if (e.intersects(obstacles[j])) {
+				// Bounce down a bit and change x direction
+				e.y -= 30;
+				e.x += (Math.random() - 0.5) * 200;
+				hitObs = true;
+				break;
+			}
+		}
+		if (hitObs) continue;
+		// Collide with hero
+		if (e.intersects(hero)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+		// Remove offscreen
+		if (e.y > 2732 + 100) {
+			e.destroy();
+			enemies.splice(i, 1);
+		}
+	}
+	// --- Enemy Spawning ---
+	spawnTimer++;
+	var spawnInterval = Math.max(30, 90 - wave * 5); // Faster with waves
+	if (spawnTimer >= spawnInterval) {
+		spawnEnemy();
+		spawnTimer = 0;
+	}
+	// Increase wave every 15 kills
+	wave = 1 + Math.floor(kills / 15);
+	// --- Fire Bullets (auto fire) ---
+	if (LK.ticks % 18 === 0) {
+		fireBullets();
+	}
+};
+// --- Game Start ---
+placeObstacles();
+spawnHero();
+LK.setScore(0);
+scoreTxt.setText(0);
+kills = 0;
+wave = 1;
+weaponLevel = 1;
+enemies = [];
+bullets = [];
+spawnTimer = 0;
\ No newline at end of file