===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,251 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* 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.damage = 2;
+	self.update = function () {
+		self.y -= self.speed;
+	};
+	return self;
+});
+var Mango = Container.expand(function () {
+	var self = Container.call(this);
+	var mangoGraphics = self.attachAsset('mango', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.maxHealth = 100;
+	self.health = self.maxHealth;
+	self.speed = 2;
+	self.coinValue = 1;
+	self.lastHealth = self.health;
+	self.takeDamage = function (damage) {
+		self.health -= damage;
+		if (self.health < 0) self.health = 0;
+	};
+	self.update = function () {
+		self.y += self.speed;
+		// Flash red when taking damage
+		if (self.lastHealth > self.health) {
+			LK.effects.flashObject(self, 0xff0000, 300);
+		}
+		self.lastHealth = self.health;
+	};
+	return self;
+});
+var Mustard = Container.expand(function () {
+	var self = Container.call(this);
+	var mustardGraphics = self.attachAsset('mustard', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.maxHealth = 200;
+	self.health = self.maxHealth;
+	self.speed = 1.5;
+	self.coinValue = 2;
+	self.lastHealth = self.health;
+	self.takeDamage = function (damage) {
+		self.health -= damage;
+		if (self.health < 0) self.health = 0;
+	};
+	self.update = function () {
+		self.y += self.speed;
+		// Flash red when taking damage
+		if (self.lastHealth > self.health) {
+			LK.effects.flashObject(self, 0xff0000, 300);
+		}
+		self.lastHealth = self.health;
+	};
+	return self;
+});
+var Player = Container.expand(function () {
+	var self = Container.call(this);
+	var playerGraphics = self.attachAsset('player', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.health = 100;
+	self.maxHealth = 100;
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x2c3e50
+});
+
+/**** 
+* Game Code
+****/ 
+// Game variables
+var player;
+var bullets = [];
+var enemies = [];
+var coins = 0;
+var playerHealth = 100;
+var gameStarted = false;
+var enemySpawnTimer = 0;
+var enemySpawnRate = 120; // frames between spawns
+var difficultyTimer = 0;
+// Create city background
+var cityBuildings = [];
+for (var i = 0; i < 12; i++) {
+	var buildingType = Math.floor(Math.random() * 3) + 1;
+	var building = LK.getAsset('cityBuilding' + buildingType, {
+		anchorX: 0.5,
+		anchorY: 1
+	});
+	building.x = i * 180 + 100;
+	building.y = 2732;
+	building.alpha = 0.3;
+	game.addChild(building);
+	cityBuildings.push(building);
+}
+// Create player
+player = game.addChild(new Player());
+player.x = 2048 / 2;
+player.y = 2732 - 150;
+// UI Elements
+var coinText = new Text2('Coins: 0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+coinText.anchor.set(0, 0);
+coinText.x = 150;
+coinText.y = 50;
+LK.gui.topLeft.addChild(coinText);
+var healthText = new Text2('Health: 100', {
+	size: 60,
+	fill: 0xFF0000
+});
+healthText.anchor.set(1, 0);
+LK.gui.topRight.addChild(healthText);
+// Game functions
+function spawnEnemy() {
+	var enemy;
+	var spawnX = Math.random() * (2048 - 100) + 50;
+	// 70% chance for Mango, 30% chance for Mustard
+	if (Math.random() < 0.7) {
+		enemy = new Mango();
+	} else {
+		enemy = new Mustard();
+	}
+	enemy.x = spawnX;
+	enemy.y = -50;
+	enemy.lastY = enemy.y;
+	enemies.push(enemy);
+	game.addChild(enemy);
+}
+function fireBullet(targetX, targetY) {
+	var bullet = new Bullet();
+	bullet.x = player.x;
+	bullet.y = player.y - 40;
+	bullet.lastY = bullet.y;
+	// Calculate angle to target
+	var deltaX = targetX - bullet.x;
+	var deltaY = targetY - bullet.y;
+	var angle = Math.atan2(deltaY, deltaX);
+	// Set bullet direction
+	bullet.velocityX = Math.cos(angle) * bullet.speed;
+	bullet.velocityY = Math.sin(angle) * bullet.speed;
+	// Override update to use calculated velocity
+	bullet.update = function () {
+		bullet.x += bullet.velocityX;
+		bullet.y += bullet.velocityY;
+	};
+	bullets.push(bullet);
+	game.addChild(bullet);
+	LK.getSound('shoot').play();
+}
+// Event handlers
+game.down = function (x, y, obj) {
+	if (gameStarted) {
+		fireBullet(x, y);
+	} else {
+		gameStarted = true;
+	}
+};
+// Main game loop
+game.update = function () {
+	if (!gameStarted) {
+		return;
+	}
+	// Spawn enemies
+	enemySpawnTimer++;
+	if (enemySpawnTimer >= enemySpawnRate) {
+		spawnEnemy();
+		enemySpawnTimer = 0;
+	}
+	// Increase difficulty over time
+	difficultyTimer++;
+	if (difficultyTimer >= 1800) {
+		// Every 30 seconds
+		if (enemySpawnRate > 30) {
+			enemySpawnRate -= 5;
+		}
+		difficultyTimer = 0;
+	}
+	// Update bullets
+	for (var i = bullets.length - 1; i >= 0; i--) {
+		var bullet = bullets[i];
+		// Remove bullets that go off screen
+		if (bullet.lastY <= 2732 && (bullet.y > 2732 || bullet.y < -50 || bullet.x < -50 || bullet.x > 2098)) {
+			bullet.destroy();
+			bullets.splice(i, 1);
+			continue;
+		}
+		bullet.lastY = bullet.y;
+	}
+	// Update enemies and check collisions
+	for (var j = enemies.length - 1; j >= 0; j--) {
+		var enemy = enemies[j];
+		// Remove enemies that reach bottom (player takes damage)
+		if (enemy.lastY < 2732 && enemy.y >= 2732) {
+			playerHealth -= 20;
+			healthText.setText('Health: ' + playerHealth);
+			LK.effects.flashScreen(0xff0000, 500);
+			if (playerHealth <= 0) {
+				LK.setScore(coins);
+				LK.showGameOver();
+				return;
+			}
+			enemy.destroy();
+			enemies.splice(j, 1);
+			continue;
+		}
+		// Check bullet collisions
+		for (var k = bullets.length - 1; k >= 0; k--) {
+			var bullet = bullets[k];
+			if (bullet.intersects(enemy)) {
+				enemy.takeDamage(bullet.damage);
+				LK.getSound('enemyHit').play();
+				// Remove bullet
+				bullet.destroy();
+				bullets.splice(k, 1);
+				// Check if enemy is dead
+				if (enemy.health <= 0) {
+					coins += enemy.coinValue;
+					coinText.setText('Coins: ' + coins);
+					LK.getSound('enemyDeath').play();
+					enemy.destroy();
+					enemies.splice(j, 1);
+				}
+				break;
+			}
+		}
+		enemy.lastY = enemy.y;
+	}
+};
\ No newline at end of file