Slippery Rope Ladders

The Walls Have Eyes, or Layer-Cake Desert-Secret, is the secret level in the second world of New Super Luigi U, Layer-Cake Desert. It can be accessed upon completion of The Walls Have Eyes. Clearing the level's main exit gives access to Soda Jungle.

Layout
Luigi starts the level in an icy area with Piranha Plants and eventually must climb up some rope ladders while avoiding enemies to reach the upper level. A pipe eventually leads to an area with a starry sky and the Goal Pole.

Star Coins

 * Star Coin 1: This coin is under an icy ledge, and can be collected by sliding down to it and then wall jumping to the nearest platform.
 * Star Coin 2: Luigi must jump on the rope ladder with the Star Coin on it during the pipe section.
 * Star Coin 3: Under some ice blocks, Luigi must use a Fire Flower to collect the coin.

Enemies

 * Piranhacus Giganticus
 * Piranha Plants
 * Big Venus Fire Trap
 * Koopa Troopas
 * Fire Bros.