Unlock the following difficulties by performing the corresponding tasks:

DIFFICULTY - HOW TO UNLOCK
Hard - Complete Z chronicles on normal
Very Hard - Complete Z chronicles on normal
Z - Complete Z chronicles on very hard

Unlock the following movies by performing the corresponding tasks:

MOVIE - HOW TO UNLOCK
Credits - Complete Broly's storyline.
Movie 1 - Complete frieza saga.
Movie 2 - Complete cell saga.

Unlock the following characters by performing the corresponding tasks:

CHARACTER - HOW TO UNLOCK
Android #16 - Complete Chapter 8 in the Cell saga.
Android #17 - Complete Chapter 3 in Cell Saga.
Android #18 - Complete Chapter 2 in Cell Saga.
Bardock - Complete Chapter 1 in Bardock Storyline.
Broly - Complete Chapter 1 in Broly Storyline.
Captain Ginyu - Complete Chapter 4 in Frieza Saga.
Final Form Frieza - Complete Chapter 14 in Frieza Saga.
Frieza (100% final form) - Complete Chapter 16 in Frieza Saga.
Frieza (first form) - Complete Chapter 8 in Frieza Saga.
Frieza (second form) - Complete Chapter 9 in Frieza Saga.
Frieza (third form) - Complete Chapter 12 in Frieza Saga.
Imperfect Cell - Complete Chapter 4 in Cell Saga.
Kaioken Goku - Complete Chapter 7 in Saiyan Saga.
Krillen - Complete Chapter 6 in the Sayian Saga.
Nappa - Complete Chapter 5 in Saiyan Saga.
Perfect Cell - Complete Chapter 12 in Cell Saga.
Piccolo (fuse with Kami) - Complete Chapter 4 in Cell Saga.
Piccolo (sync with Nail) - Complete Chapter 11 in Frieza Saga.
Raditz - Complete Chapter 1 in Saiyan Saga.
Recoome - Complete Chapter 1 in Frieza Saga.
Saibamen - Complete Chapter 3 in Saiyan Saga.
Semi-Perfect Cell - Complete Chapter 6 in Cell Saga.
Super Perfect Cell - Complete Chapter 18 or 19 in Cell Saga.
Super Saiyan 2 Teen Gohan - Complete Chapter 19 in Cell Saga.
Super Saiyan Goku - Complete Chapter 16 in Frieza Saga.
Super Saiyan Trunks - Complete Chapter 7 in Cell Saga.
Super Saiyan Vegeta - Complete Chapter 2 in Cell Saga.
Super Sayian 2 Gohan - Complete Chapter 17 in the Cell Saga.
Super Sayian Gohan - Complete Chapter 16 in the Cell Saga.
Super Trunks - Complete Chapter 13 in Cell Saga.
Super Vegeta - Complete Chapter 10 in Cell Saga.
Teen Gohan - Complete Chapter 1 in Cell Saga.
Tien - Complete Chapter 3 in the Sayian Saga.
Trunks - Complete Chapter 7 in Cell Saga.
Vegeta - Complete Chapter 8 in Saiyan Saga.
Yamcha - Complete Chapter 4 in the Sayian Saga.

To unlock alternate costumes, complete the game. Then, at the character selection screen, highlight one of the listed characters and hold triangle until their name turns yellow.

Frieza
Gohan
Krillin
Trunks
Vegeta

Use the Left Analog-stick and Right Analog-stick to roll the Dragonballs along the ground. Press X and Y to make the Dragonballs bounce very high. Repeated pressing can result in extreme height on Dragonball bounces with the correct timing. Press A and B to get a weaker bounce.

While fighting 100% Final Form Frieza in the storyline, if you can get close enough without him attacking you, repeatedly press Y + LT. You can keep hitting him without him being able to attack back. If he does get out, you can also repeatedly use a Kamehameha.

ACHIEVEMENT - HOW TO UNLOCK
The Story Begins (5 points) - Complete the first chapter of the Saiyan Saga.
Meeting a Rival (5 points) - Complete all chapters of the Saiyan Saga.
The First Z Award (20 points) - Complete a chapter with a Z rank on Normal difficulty.
Saiyan Z Award (35 points) - Complete all Saiyan Saga chapters with a Z rank on Normal difficulty.
Fierce Warrior (40 points) - Complete all Saga chapters with the difficulty set to Very Hard.
Full Drama Unlock (5 points) - Unlock all Drama Pieces for one character.
Saiyan Saga Drama (20 points) - Unlock all Drama Pieces from the Saiyan Saga.
All Saiyan Fighters (5 points) - Unlock all Saiyan Saga fighters.
Saiyan Saga Allies (5 points) - Unlock all Saiyan Saga ally characters.
Worldwide Contender (5 points) - Join 10 sessions over Xbox LIVE.
Worldwide Warrior (5 points) - Create 10 sessions over Xbox LIVE.
Battler (Default) (5 points) - Play the Survival Trial (Default Drama).
Speed Beyond Terror (5 points) - Complete the Time Attack Trial (Course A) and get a result.
Score Beyond Terror (5 points) - Complete the Battle Point Trial (Course A) and get a result.
A Beginner Awakens! (5 points) - Complete Basic tutorials.
Bloodless Victory! (20 points) - Win a battle without taking any damage in Z Chronicles or Versus.
Destructive Win! (5 points) - Win a battle while changing or destroying the background in Z Chronicles or Versus.
Unleashed Ki Win! (5 points) - Transform, use Aura Spark, and win with an Ultimate Attack in Z Chronicles or Versus.
Advanced Victory! (15 points) - Complete Advanced tutorials.
Legendary Warrior (15 points) - Complete all chapters of the Frieza Saga.
Ultimate Warrior (15 points) - Unlock all characters' Ultimate Attacks.
Survivor (Default) (35 points) - Play the Survival Trial (Default Drama) and defeat 50 opponents.
Survivor (Custom) (35 points) - Play the Survival Trial (Custom Drama) and defeat 50 opponents.
Frieza Z Award (35 points) - Complete all Frieza Saga chapters with a Z rank on Normal difficulty.
Z Warrior (40 points) - Complete all Saga chapters with the difficulty set to Z.
Birth of a Legend (100 points) - Play the Survival Trial (Default Drama) and defeat all opponents.
Goku's Father (20 points) - Unlock Bardock.
Legendary Saiyan (20 points) - Unlock Broly.
All Drama Pieces (40 points) - Unlock all Drama Pieces for all characters.
Intermediate Fire! (5 points) - Complete Intermediate tutorials.
Ultimate Unlock (5 points) - Unlock all of one character's Ultimate Attacks.
Sturdy Warrior (20 points) - Unlock all fighters.
Frieza Saga Drama (20 points) - Unlock all Drama Pieces from the Frieza Saga.
Cell Saga Drama (20 points) - Unlock all Drama Pieces from the Cell Saga.
All Frieza Fighters (5 points) - Unlock all Frieza Saga fighters.
Frieza Saga Allies (5 points) - Unlock all Frieza Saga ally characters.
Master of History (15 points) - Complete all chapters.
All Cell Fighters (5 points) - Unlock all Cell Saga fighters.
Family Bonds (15 points) - Complete all chapters of the Cell Saga.
Cell Saga Allies (5 points) - Unlock all Cell Saga ally characters.
Cell Z Award (35 points) - Complete all Cell Saga chapters with a Z rank on Normal difficulty.
Z Master Award (35 points) - Complete all chapters with a Z rank on Normal difficulty.
Ultimate Z Fighter (100 points) - Complete all Saga chapters at difficulty Z, with Z ranks.
Ultimate Survivor (100 points) - Play the Survival Trial (Custom Drama) and defeat all opponents.
Battler (Custom) (5 points) - Play the Survival Trial (Custom Drama).
Speed Beyond Power (5 points) - Complete the Time Attack Trial (Course B) and get a result.
Speed Beyond Rivals (5 points) - Complete the Time Attack Trial (Course C) and get a result.
Score Beyond Power (5 points) - Complete the Battle Point Trial (Course B) and get a result.
Score Beyond Rivals (5 points) - Complete the Battle Point Trial (Course C) and get a result.
Powerful Allies (15 points) - Unlock all ally characters.