First things first, how to get a new save file. What I did and seems to be the most reliable thing to do is copy your current smash save file to a USB Port. Once you have a smash file on both your system memory and USB you can delete the save data from your system memory. This will keep the save data on your USB but still give you a new game on system memory. Turn off your WiiU once you Copy, and than delete your save memory off your system memory and remove your USB Port after the WiiU is turned off Start up the game and now you can start the run! Timer starts when you hit any button at the selection screen

Falco - Clear Classic Wario - Clear 100 Man Smash Lucina - Clear Classic on 5.5 or higher Dark Pit - Clear All Star Normal Dr. Mario - Clear Master Orders Hard R.O.B. - Clear Crazy Orders after 10 rounds and defeat Crazy Hand Mr. Game & Watch - Clear Classic Mode on intensity 2.0 or higher with 5 characters Duck Hunt - Earn 1 KO in Cruel Smash

Listed above are all the characters you have to unlock and how to do so I will put my current route that I think is the fastest and will edit if need be.

Classic 2.0 Ganondorf Unlock Falco Clear Classic 5.5 Bowser Unlock Lucina Classic 2.0 Rosalina & Luma Classic 2.0 Ness Classic 2.0 Captain Falcon Unlock Mr. Game & Watch All Star Normal Unlock Dark Pit Clear 100 Man Smash Unlock Wario 1 KO in Cruel Smash Unlock Duck Hunt Master Orders on Hard Unlock Dr. Mario Crazy Orders (10) Unlock R.O.B.