Smash 3DS Best Mode for Mii Outfits

[vinerd]

So I'm trying to unlock Flat Zone 2, and it says I have to unlock Mr. Game and Watch (which I've already did,) and unlock page 2 of the Challenges menu. However, my last challenge is one where I have to unlock 3 Mii Outfits, but I haven't gotten one! What mode is the best for getting Mii outfits?

 

[Kain6th]

Smash run seems to do it for me. just keep playing those and pick up the wrench bags. i think those contain them

 

[YamiKitsune]

I don't care about FZ2 or G&W myself. But I REALLY want more mii outfits. They seem so damn rare.

 

[PushDustIn]

Outfits aren't rare. Hats are frickin' rare. Over 100 hours in Single Player and I'm still missing 5 hats!
You will probably get:
(30 hours ish) All the outfits
(After 60-120 hours) All the custom moves/ Smash Run Items/ All the trophies (depending on how you are farming custom items)
(After 150 hours) All the hats.

Unless the RNG god loves you.