Wario Land 3 - Tower of Revival (Blue Chest)

In the room with fences, find the golden door that’s now open and enter it. As you climb the ladder, an aftershock can cause you to slip down so use the gaps for safety. Fall by the right opening to grab the Blue Key. Turn flat then return to normal by going up the platforms. In the next room, break all of the blocks and throw a Brrr Bear at the blocks where a Silky awaits. Turn into a yarn ball to break the last block and open the Blue Chest. Inside the chest is the Sky Key, which unlocks Above the Clouds.