===================================================================
--- original.js
+++ change.js
@@ -80,10 +80,16 @@
 	hero.update();
 	// Update all enemies
 	for (var i = enemies.length - 1; i >= 0; i--) {
 		enemies[i].update();
-		// Check for enemy off-screen or collision with hero bullets
-		if (enemies[i].y > 2732 || enemies[i].intersects(hero)) {
+		// End game when hero collides with an enemy
+		if (enemies[i].intersects(hero)) {
+			LK.effects.flashScreen(0xff0000, 1000);
+			LK.showGameOver();
+			return;
+		}
+		// Check for enemy off-screen
+		if (enemies[i].y > 2732) {
 			enemies[i].destroy();
 			enemies.splice(i, 1);
 		}
 	}