Probably by using Super Snails or something. I'm new so I'm not sure...The damage that I heard can be reduced to below normal levels of damage with your gear holding Defense Up. Hope this helps!

cheatx, gambling or what he said

Some by re-rolling a lot with snails and being lucky. Most probably by cheating tho.

super easy all you gotta do is use SplatHex and SaveMii (get it from the Homebrew App Store), good tutorial at youtube.com/watch?v=BXzSIt4woYY you need the same equipment as you use for the aroma firmware i assume you used to mod your WiiU