When you see a waterfall there is a secret way in it.Go there and you will find a
bridge.Pass the bridge and you will find a village.Go to the bottom of the village.there
will be a way go on the way you will see many little dinosaurs beware of them because they
can hit you but you can't hit them.Find the way and you will see king tricerotops

as any character before goku go to goku's gate in the northern mountains and destroy the
dinosaur on the other side. your blue bar will fill up fast.

the cheat above named IMMORTALITY is a lie. don't believe it. there is no garlic jr. and
no shenron

select a character with more than 100 EP,and more than one attack-it can be transforming
or special,but not melee.select the energy ball,and press B many times to fire many
balls.At same time,press A many times.You will be changing attacks,but will not stop to
firing balls.

ok hers how you do it first go to the first island and there will be some crocodiles and
attract all the crocodiles (its easy when you super saiyan)then for example i used piccolo
i attracted the corcodiles and used the spybeam and pass all the crocodiles (your exp will
be plus realy big when you kill all the crocodiles the exp youll get is ------ that long
so try doing its realy easy)

In the northern mountains where the dinosors are, go there to level up I got alot of
expierance points for thast

When fighting cell as Vegeta, try to stay SS. 
U can use close combat attacks but not so much. (Cell can steal your health with his
tail)
If you need to use big bang attack, try to get as far away as possible to charge it up. 
Don't use the energy punch, cell just hits u before it lands.

When fighting cell as Trunks, find a safe spot and turn back to normal mode. (Trust me,
you won't last long asended SS long.
walk over to cell and hit him with a burning atk. It'll stun him so u can pound him with
punches and kicks, if he fights back, hit him again with the burning atk. 

Before Goku fights Cell bust the barrier walk to the spot before the cutsence, then go
SS
and walk to the sence

1.Never use super saiyan unless you're about to die.

2.Using super saiyan takes away energy.

While playing as gohan at the cell games when you're super saiyan 2 attack him repeatedly
then finish it with a finishing kameameha.Ounce he attacked trunks use kameameha
repeatedly and you can't stop.

if u r in low level and if u unlock all the characters train them all in one piece example
first train goku get him to level 40 go to the pwerful enemies

first turn super sainyn with any character then when it about to run out of super sainyn
energy hold down A and u glow

First you need to be using Vegeta and have his big bang icon showing. Start charging the
big biang and then press the start button without stopping the charge. When in the pause
menu, let go of the B button and press the start button again. the big bang should be
charging on its own now.

                                      hope it helps

go to warlords domain go were you find the guy who takes the mayors key, at his house go
to the punching bag turn super namek or super sayin hold in the a button untill the energy
finishes then you will be glowing you can't punch or kick or it will go    

first go to worlord house then go ssj go to  the punching bag as a ssj then hold A untill
you run out of energy let go then you will be glowing 

thank you for reading