===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,141 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+
+/**** 
+* Classes
+****/ 
+var Archer = Container.expand(function () {
+	var self = Container.call(this);
+	var archerGraphics = self.attachAsset('archer', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	return self;
+});
+var Arrow = Container.expand(function () {
+	var self = Container.call(this);
+	var arrowGraphics = self.attachAsset('arrow', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speedX = 0;
+	self.speedY = 0;
+	self.update = function () {
+		self.x += self.speedX;
+		self.y += self.speedY;
+	};
+	return self;
+});
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = -2;
+	self.update = function () {
+		self.x += self.speed;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
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+	backgroundColor: 0x87CEEB
+});
+
+/**** 
+* Game Code
+****/ 
+var archer = game.addChild(new Archer());
+archer.x = 150;
+archer.y = 2732 / 2;
+var arrows = [];
+var enemies = [];
+var enemySpawnTimer = 0;
+var enemySpawnRate = 120; // frames between spawns
+var scoreTxt = new Text2('0', {
+	size: 100,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
+scoreTxt.setText(LK.getScore());
+game.down = function (x, y, obj) {
+	// Calculate direction from archer to tap point
+	var dirX = x - archer.x;
+	var dirY = y - archer.y;
+	var distance = Math.sqrt(dirX * dirX + dirY * dirY);
+	// Normalize direction
+	var normalX = dirX / distance;
+	var normalY = dirY / distance;
+	// Create arrow
+	var newArrow = new Arrow();
+	newArrow.x = archer.x;
+	newArrow.y = archer.y;
+	newArrow.speedX = normalX * 15;
+	newArrow.speedY = normalY * 15;
+	// Rotate arrow to face direction
+	newArrow.rotation = Math.atan2(normalY, normalX);
+	arrows.push(newArrow);
+	game.addChild(newArrow);
+	LK.getSound('shoot').play();
+};
+game.update = function () {
+	// Update enemy spawn timer
+	enemySpawnTimer++;
+	if (enemySpawnTimer >= enemySpawnRate) {
+		enemySpawnTimer = 0;
+		// Spawn new enemy
+		var newEnemy = new Enemy();
+		newEnemy.x = 2048 + 50;
+		newEnemy.y = Math.random() * (2732 - 200) + 100;
+		enemies.push(newEnemy);
+		game.addChild(newEnemy);
+		// Increase difficulty over time
+		if (enemySpawnRate > 30) {
+			enemySpawnRate -= 0.5;
+		}
+	}
+	// Update arrows
+	for (var i = arrows.length - 1; i >= 0; i--) {
+		var arrow = arrows[i];
+		// Remove arrows that go off screen
+		if (arrow.x > 2100 || arrow.x < -50 || arrow.y > 2800 || arrow.y < -50) {
+			arrow.destroy();
+			arrows.splice(i, 1);
+			continue;
+		}
+		// Check arrow-enemy collisions
+		for (var j = enemies.length - 1; j >= 0; j--) {
+			var enemy = enemies[j];
+			if (arrow.intersects(enemy)) {
+				// Hit enemy
+				LK.setScore(LK.getScore() + 10);
+				scoreTxt.setText(LK.getScore());
+				LK.getSound('hit').play();
+				LK.effects.flashObject(enemy, 0xff0000, 200);
+				// Remove arrow and enemy
+				arrow.destroy();
+				arrows.splice(i, 1);
+				enemy.destroy();
+				enemies.splice(j, 1);
+				break;
+			}
+		}
+	}
+	// Update enemies and check if they reached the archer
+	for (var k = enemies.length - 1; k >= 0; k--) {
+		var enemy = enemies[k];
+		// Check if enemy reached archer
+		if (enemy.x <= archer.x + 50) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+	}
+};
\ No newline at end of file