Just play the game. You'll hardly use a lot with the current selection of Items available as of now.

But if anything, to answer your question:

Fight Lab> Chapter 1 Boss> Use a flying attack> (In the LK + RK Category)> Win

Apparently you receive 200 - 300k Each victory, and it takes very quick to complete.

*Credits given to Ken02040608 of GFaqs*

Anyways... Ghost mode is your best friend offline... remember! and have fun :D

Lmaoo, I'm positive NB will do something about the issue, but as far as day 1 stuff goes, they dropped the ball with customization options :/. Everything else was pulled exceptionally well though :)

Ehh, She's alright. You can't spam her, since AI can just Counter your ass if you keep at it. Jun/Unknown has a lot of moves that leave her on -frames. So just take advantage of that, using whiff punishers / Fast KnD pokes / Launchers. Learn atleast 1 staple combo for each of your characters. The AI likes to duck a lot so use Mid attacks / hopkicks. (Well at least for me :D).

Meh she was alright.. The only reason people actually do legitimately lose to her is because people don't have matchup experience to her prior to the very 1st encounter in arcade mode.

Well hope this helps! Everyone's contribution above also helps out :). So just keep at it!

I'm also wondering if there is a quicker way. So far I'm just sticking to Ghost Mode since the item boxes seem to drop much more common in there. Unless the item boxes dont have anything to do with the specific outfits... Then Idk :|.

I could live without it but, I guess I do miss having some sort of mini game / adventure-esque kind of thing.. 1st thing that does pop into my mind in terms of mini games is volleyball... seriously.. that was genius...

Solo I use either Jin or Jun, either one works for me. though I do have a tendency to just pick jin since that was my main in T6.

Team would have to be Jin and Jun. :D