ALL credit for this solution goes to my friend X1ooobirds.
This achievement is unlocked for earning all he other achievements in the game. In order to do so the following must be performed:
-Complete all 11 "Tales of" Story-lines
-Complete all 4 Survival Mode Ranks (225 matches)
-Complete all 12 Challenge Tornaments
-Defeat 10 opponents in Ultimate Survival Mode
-Collect 80% of Ninja Info Cards, Titles, Ninja Tools, Substitution Jutsus, Ultimate Jutsus,
-Use all characters (Free Battle) (Team Names)
-Buy an item
-Edit a Ninja Tool
-Earn an S Rank
-Play for 30 hours
-Earn 1,000,000 Ryo (1 Million)
For help look up X1ooobirds' glitch on select UNSG solutions to make battling easier.
Once these objectives have been met you'll earn yourself you official 1000G in this game!