The Destroyer Cometh
From SmashWiki, the Super Smash Bros. wiki
The Destroyer Cometh is a single-player event match in Super Smash Bros. for Wii U. In it, the player controls Palutena, and must defeat a giant Ganondorf and two other Ganondorfs before they break all the ground. The terrain will not restore once it is destroyed, like it normally does.
This event is unlocked by clearing The Original Heavyweights. Completing the event unlocks the up and down paths.
Completing the event within 45 seconds awards an Escape Artist Sandals equipment.