How do you beat cell in mania I keep trying but I die before I get his..

To beat cell I used cell (complete) broly and super goku. Just as the game says "fight" I go up to cell and punch 3 times and then throw him. Either dash hit or use super move n then continue this. Broly is the main muscle he's hard to take down and if he is in the red health and has 150 energy go under cell and do his ultimate move. Then if he is still alive which he was for me use goku's speed and agility to dash attack him and then if he still isnt dead use gokus ultimate attack. It took me a few tries to do it so don't be doubtful if you don't do it first time.

use super goku super vegita and bardrock kill cell only by using special attacks and regain your ki power through bardroc
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if u do not have broly and cell u could use yamcha and tien as sp characters. yu could use tien to make goku stop attacking then use your own super tecniques. this style could also work for cell and broly(in maximum)