Hint: Master Skills:
Unlock all characters unlocked, then start Ultimate Battle under the normal difficulty setting. Select "Practice", then defeat ten consecutive characters. This will unlock the Dragon Power Purple Potara. Defeat twenty consecutive
characters to unlock the Miracle Purple Potara. Fuse the Miracle and Dragon Power Purple Potaras to get Master Skills.
Select Ultimate Battle mode. Select the 100 top rankings (not the practice one). Choose any character (SSJ4 Gogeta recommended). Battle your way to the top 100. You will face the regular Goku at the number one spot. Once you defeat him, an item Master Skills will be awarded. This will not be easy. During certain battles, intruders and challengers will appear.
Hint: Easy Dragonballs:
Fight any level in Z Battle Gate at Kami's Lookout. For example, play as Krillin vs Yamcha. When you get the chance, go over to the Main Building and put it between you and the enemy. When you fire your finishing move, you will destroy the building. At this point go over and look at the ruins. There will be a column stump remaining in the middle, and a Dragonball on top of it. It does roll off -- if it is not on top, then it is somewhere on the ground.
Quickly grab it and make sure you defeat your opponent, or you will have to get the Dragonball all over again. All seven Dragonballs will appear one at a time at this location randomly. Just fight in the level seven times to get a
wish from Shenron. This is very useful, as every time you get a Dragonball and complete the level, you will also get another Z item Fusion, which are valuable, and a random Z item. Do this as many times as desired.
In story mode, select the Buu Saga and look for the level that takes place on top of Kami's lookout. (SSJ3 Goten vs. Super Buu). During the fight, destroy the main building on top of Kami's tower. There will be a Dragonball amongst
the rubble every time. Repeat this as many times as desired. Note: You must successfully complete the challenge each time in order to receive the Dragonball at the end of the match (for example, finishing off Super Buu with
the Volleyball attack).
Go to the fight with Chiaotzu vs. Guldo. Burst through the few islands in the stage and locate the Dragonball by using your radar. Then, defeat Guldo. He is not much of a challenge. Repeat this to get all the Dragon Balls.