Play on a difficulty level of three or higher and fight the following matches in order:

Son Gokuu Vs. Picollo
Son Gokuu Vs. Vejeta
Son Gokuu Vs. Freeza
Piccolo Vs. Android #20
Vejeta Vs. Android #18
Piccolo Vs. Cell
Son Goku Vs. Android #16
Vejeta Vs. Trunks
Son Goku Vs. Son Gohan
Son Gohan Vs. P-Cell

The text "The End" will appear. Wait until "Final Battle" appears. Defeat Perfect Cell to view the real ending of the game.