===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,390 @@
-/****
+/**** 
+* Plugins
+****/ 
+var tween = LK.import("@upit/tween.v1");
+var storage = LK.import("@upit/storage.v1");
+
+/**** 
+* Classes
+****/ 
+var Enemy = Container.expand(function () {
+	var self = Container.call(this);
+	var enemyGraphics = self.attachAsset('enemy', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 8;
+	self.lastY = 0;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+var Lightning = Container.expand(function () {
+	var self = Container.call(this);
+	var lightningGraphics = self.attachAsset('lightning', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 12;
+	self.lastY = 0;
+	self.update = function () {
+		self.y += self.speed;
+	};
+	return self;
+});
+var Rune = Container.expand(function () {
+	var self = Container.call(this);
+	var runeGraphics = self.attachAsset('rune', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 6;
+	self.lastY = 0;
+	self.update = function () {
+		self.y += self.speed;
+		self.rotation += 0.1;
+	};
+	return self;
+});
+var SeaSerpent = Container.expand(function () {
+	var self = Container.call(this);
+	var serpentGraphics = self.attachAsset('seaSerpent', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 4;
+	self.lastY = 0;
+	self.update = function () {
+		self.y += self.speed;
+		self.x += Math.sin(self.y * 0.01) * 2;
+	};
+	return self;
+});
+var Shield = Container.expand(function () {
+	var self = Container.call(this);
+	var shieldGraphics = self.attachAsset('shield', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.speed = 6;
+	self.lastY = 0;
+	self.update = function () {
+		self.y += self.speed;
+		self.rotation += 0.05;
+	};
+	return self;
+});
+var VikingShip = Container.expand(function () {
+	var self = Container.call(this);
+	var shipGraphics = self.attachAsset('vikingShip', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.targetLane = 2;
+	self.currentLane = 2;
+	self.health = 3;
+	self.shields = 0;
+	self.invulnerable = false;
+	self.invulnerableTimer = 0;
+	self.setLane = function (lane) {
+		self.targetLane = Math.max(0, Math.min(4, lane));
+	};
+	self.takeDamage = function () {
+		if (self.invulnerable) return;
+		if (self.shields > 0) {
+			self.shields--;
+			updateShieldDisplay();
+		} else {
+			self.health--;
+			updateHealthDisplay();
+			LK.getSound('hit').play();
+			if (self.health <= 0) {
+				LK.showGameOver();
+				return;
+			}
+		}
+		self.invulnerable = true;
+		self.invulnerableTimer = 120;
+		LK.effects.flashObject(self, 0xff0000, 500);
+	};
+	self.update = function () {
+		var targetX = lanePositions[self.targetLane];
+		var diff = targetX - self.x;
+		if (Math.abs(diff) > 5) {
+			self.x += diff * 0.15;
+		} else {
+			self.x = targetX;
+			self.currentLane = self.targetLane;
+		}
+		if (self.invulnerable) {
+			self.invulnerableTimer--;
+			if (self.invulnerableTimer <= 0) {
+				self.invulnerable = false;
+			}
+		}
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000
-});
\ No newline at end of file
+	backgroundColor: 0x1e3a8a
+});
+
+/**** 
+* Game Code
+****/ 
+var lanePositions = [2048 * 0.1, 2048 * 0.275, 2048 * 0.5, 2048 * 0.725, 2048 * 0.9];
+var vikingShip = null;
+var enemies = [];
+var runes = [];
+var shields = [];
+var lightnings = [];
+var seaSerpents = [];
+var level = 1;
+var score = 0;
+var distance = 0;
+var enemySpawnTimer = 0;
+var runeSpawnTimer = 0;
+var shieldSpawnTimer = 0;
+var lightningSpawnTimer = 0;
+var serpentSpawnTimer = 0;
+var gameSpeed = 1;
+var scoreTxt = new Text2('Score: 0', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+scoreTxt.anchor.set(0, 0);
+scoreTxt.x = 150;
+scoreTxt.y = 50;
+LK.gui.topLeft.addChild(scoreTxt);
+var levelTxt = new Text2('Level: 1', {
+	size: 60,
+	fill: 0xFFFFFF
+});
+levelTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(levelTxt);
+var healthTxt = new Text2('Health: 3', {
+	size: 60,
+	fill: 0xFF0000
+});
+healthTxt.anchor.set(1, 0);
+healthTxt.x = -50;
+healthTxt.y = 50;
+LK.gui.topRight.addChild(healthTxt);
+var shieldTxt = new Text2('Shields: 0', {
+	size: 60,
+	fill: 0x4169E1
+});
+shieldTxt.anchor.set(1, 0);
+shieldTxt.x = -50;
+shieldTxt.y = 120;
+LK.gui.topRight.addChild(shieldTxt);
+function updateScore() {
+	scoreTxt.setText('Score: ' + score);
+}
+function updateLevel() {
+	levelTxt.setText('Level: ' + level);
+}
+function updateHealthDisplay() {
+	healthTxt.setText('Health: ' + vikingShip.health);
+}
+function updateShieldDisplay() {
+	shieldTxt.setText('Shields: ' + vikingShip.shields);
+}
+function spawnEnemy() {
+	var enemy = new Enemy();
+	var lane = Math.floor(Math.random() * 5);
+	enemy.x = lanePositions[lane];
+	enemy.y = -100;
+	enemy.lastY = enemy.y;
+	enemies.push(enemy);
+	game.addChild(enemy);
+}
+function spawnRune() {
+	var rune = new Rune();
+	var lane = Math.floor(Math.random() * 5);
+	rune.x = lanePositions[lane];
+	rune.y = -100;
+	rune.lastY = rune.y;
+	runes.push(rune);
+	game.addChild(rune);
+}
+function spawnShield() {
+	var shield = new Shield();
+	var lane = Math.floor(Math.random() * 5);
+	shield.x = lanePositions[lane];
+	shield.y = -100;
+	shield.lastY = shield.y;
+	shields.push(shield);
+	game.addChild(shield);
+}
+function spawnLightning() {
+	var lightning = new Lightning();
+	var lane = Math.floor(Math.random() * 5);
+	lightning.x = lanePositions[lane];
+	lightning.y = -100;
+	lightning.lastY = lightning.y;
+	lightnings.push(lightning);
+	game.addChild(lightning);
+}
+function spawnSeaSerpent() {
+	var serpent = new SeaSerpent();
+	var lane = Math.floor(Math.random() * 5);
+	serpent.x = lanePositions[lane];
+	serpent.y = -200;
+	serpent.lastY = serpent.y;
+	seaSerpents.push(serpent);
+	game.addChild(serpent);
+}
+function checkCollisions() {
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var enemy = enemies[i];
+		if (enemy.intersects(vikingShip)) {
+			vikingShip.takeDamage();
+			enemy.destroy();
+			enemies.splice(i, 1);
+		}
+	}
+	for (var i = runes.length - 1; i >= 0; i--) {
+		var rune = runes[i];
+		if (rune.intersects(vikingShip)) {
+			score += 100;
+			updateScore();
+			LK.getSound('collect').play();
+			rune.destroy();
+			runes.splice(i, 1);
+		}
+	}
+	for (var i = shields.length - 1; i >= 0; i--) {
+		var shield = shields[i];
+		if (shield.intersects(vikingShip)) {
+			vikingShip.shields++;
+			updateShieldDisplay();
+			LK.getSound('collect').play();
+			shield.destroy();
+			shields.splice(i, 1);
+		}
+	}
+	for (var i = lightnings.length - 1; i >= 0; i--) {
+		var lightning = lightnings[i];
+		if (lightning.intersects(vikingShip)) {
+			vikingShip.takeDamage();
+			lightning.destroy();
+			lightnings.splice(i, 1);
+		}
+	}
+	for (var i = seaSerpents.length - 1; i >= 0; i--) {
+		var serpent = seaSerpents[i];
+		if (serpent.intersects(vikingShip)) {
+			vikingShip.takeDamage();
+			serpent.destroy();
+			seaSerpents.splice(i, 1);
+		}
+	}
+}
+function cleanupObjects() {
+	for (var i = enemies.length - 1; i >= 0; i--) {
+		var enemy = enemies[i];
+		if (enemy.lastY < 2800 && enemy.y >= 2800) {
+			enemy.destroy();
+			enemies.splice(i, 1);
+		}
+		enemy.lastY = enemy.y;
+	}
+	for (var i = runes.length - 1; i >= 0; i--) {
+		var rune = runes[i];
+		if (rune.lastY < 2800 && rune.y >= 2800) {
+			rune.destroy();
+			runes.splice(i, 1);
+		}
+		rune.lastY = rune.y;
+	}
+	for (var i = shields.length - 1; i >= 0; i--) {
+		var shield = shields[i];
+		if (shield.lastY < 2800 && shield.y >= 2800) {
+			shield.destroy();
+			shields.splice(i, 1);
+		}
+		shield.lastY = shield.y;
+	}
+	for (var i = lightnings.length - 1; i >= 0; i--) {
+		var lightning = lightnings[i];
+		if (lightning.lastY < 2800 && lightning.y >= 2800) {
+			lightning.destroy();
+			lightnings.splice(i, 1);
+		}
+		lightning.lastY = lightning.y;
+	}
+	for (var i = seaSerpents.length - 1; i >= 0; i--) {
+		var serpent = seaSerpents[i];
+		if (serpent.lastY < 2800 && serpent.y >= 2800) {
+			serpent.destroy();
+			seaSerpents.splice(i, 1);
+		}
+		serpent.lastY = serpent.y;
+	}
+}
+vikingShip = new VikingShip();
+vikingShip.x = lanePositions[2];
+vikingShip.y = 2200;
+game.addChild(vikingShip);
+game.down = function (x, y, obj) {
+	var closestLane = 0;
+	var closestDistance = Math.abs(x - lanePositions[0]);
+	for (var i = 1; i < 5; i++) {
+		var distance = Math.abs(x - lanePositions[i]);
+		if (distance < closestDistance) {
+			closestDistance = distance;
+			closestLane = i;
+		}
+	}
+	vikingShip.setLane(closestLane);
+};
+game.update = function () {
+	distance++;
+	score += 1;
+	if (distance % 3000 === 0) {
+		level++;
+		gameSpeed += 0.2;
+		updateLevel();
+	}
+	enemySpawnTimer++;
+	if (enemySpawnTimer >= Math.max(60 - level * 5, 30)) {
+		spawnEnemy();
+		enemySpawnTimer = 0;
+	}
+	runeSpawnTimer++;
+	if (runeSpawnTimer >= 180) {
+		spawnRune();
+		runeSpawnTimer = 0;
+	}
+	shieldSpawnTimer++;
+	if (shieldSpawnTimer >= 600) {
+		spawnShield();
+		shieldSpawnTimer = 0;
+	}
+	if (level >= 2) {
+		lightningSpawnTimer++;
+		if (lightningSpawnTimer >= 120) {
+			spawnLightning();
+			lightningSpawnTimer = 0;
+		}
+	}
+	if (level >= 3) {
+		serpentSpawnTimer++;
+		if (serpentSpawnTimer >= 300) {
+			spawnSeaSerpent();
+			serpentSpawnTimer = 0;
+		}
+	}
+	checkCollisions();
+	cleanupObjects();
+	if (LK.ticks % 10 === 0) {
+		updateScore();
+	}
+};
+LK.playMusic('vikingTheme');
\ No newline at end of file