Item description:

First start a new game, defeating Piccolo on your own is a MUST! You can also ignore the Auto Save.

Save File 1:
Load this up and beat the remaining fights to complete the Saiyan saga, you are level 250 with mass stats.

Save File 2:
Load this up and beat the remaining fights to complete the Frieza saga, you are level 250 with mass stats

Save File 3:
Load this up and beat the remaining fights to complete the Android / Cell saga, you are level 250 with mass stats

Save File 4:
Load this up and beat the remaining fights to complete the Majin Buu saga, you are level 250 with mass stats

Save File 5:
Load this up and do the following:
1. Complete the last of Goku's training (Level 10 training trophy)
2. Talk to Bulma and build the last Part (Seat)
3. Talk to Bulma and build the Hovercar
4. Talk to Bulma and build Robo Walker

Save File 6:
Load this up and do the following:
1. Defeat Mira, he is basically right in front of you. You are level 91 but have mass HP and Ki, so keep going Super Saiyan 3 and spam Spirit Bomb
2. Go to Kame House and talk to Master Roshi, this should give you the Turtle Training and D Medal trophies
2. While at Kame House talk to Krillin, this is a super easy sub quest and gets you the sub quest trophies
3. Go to ANY Mineral Deposit locations, they sometimes have boulders blocking caves you can break. You need to be at least level 10 to break then, so find one and break it for a trophy. (I think the location is called Namm's Village or something, but you should be able to find them)
4. The messages from King Kai trophies can be annoying, but I found mine at Mineral Deposit locations or randomly flying through air ways.
5. Fight ANY of the red Villainous parties, shouldn't be too hard. You have mass HP and Ki, as well as TONS of healing items.
6. Finish ANY fight with a Super Finish
7. Do 1 Z combo in ANY fight
8. Perform a Super Assist move in ANY fight
9. Rush around any map to get an instant victory and your trophies
10. Summon Shenron and make a wish
11. Complete a training course at any Training Grounds (NOTE: If you can't then load up Save File 5)
11. Go to Goku's house and have ChiChi make you a Full-Course meal
12. Go and upgrade some skills in ANY characters Skill Tree
13. Check the Z Encyclopedia (Note: If you don't get your trophies try one of the other save files)