ok first you need WE GOTTA POWER! ability fully upgraded and to be done story mode and Fighters Body.Ok go on the mission where you let Hurcle win put on WE GOTTA POWER! and Fighters Body and let him knock you out of the ring you will get 90,000 zeni each time and you can do this as many times you want.
It's pretty obvious, But during the Cell saga, One of the mini-games, Is Goku finding the Dragonball While destroying all the fake ones by Red-Ribbon. Well, The dragonball is in the same place everytime. So you can just keep doing that mini-game again and again.
Bardock - must finish every mission dealing with Bardock in Story Mode 2
Broly - Must face him 3 times then finish the "other" saga in Story Mode
Cell saga characters and techniques - beat the Cell saga in story mode
Cooler - Must face him 3 times then finish the "other" saga in Story Mode
Frieza saga characters and techniques - beat the Frieza saga in story mode
Gt saga characters and techniques - beat the Gt saga in story mode
Janemba - Must face him 2 times then finish the "other" saga in Story Mode
Majin Buu saga characters and techniques - beat the Majin Buu saga in story mode
Pikkon - Defeat Pikkon in Story Mode 2
Saiyan saga characters and techniques - beat the Saiyan saga in story mode
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