.hack//G.U. Vol. 2//Remininsce

.hack//G.U. Vol. 1 and 2 trailers:
Go to the main desktop screen, then hold R1 + R2 and press Square, Triangle, Square, Triangle. Release R1 + R2, then hold L1 + L2 and press Right, Up, Right, Up. Release L1 + L2 and press L3 + R3. The message "Code input complete! The movie, "Vol 1 & 2 Preview" is added" will confirm correct code entry. Note: This code will not work if a saved game from .Hack//G.U. Volume 1: Rebirth was loaded.

Continuation bonuses:
Load a saved game file from .Hack//G.U. Volume 1: Rebirth to unlock an email from Yachimada, 5,000 GP, some random items, and three bonus movies (.hack// Roots episode 1 A and B, and previews for G.U. 1 and 2).
fet, re grtuam harpMechaTamaVII.

After loading a game save from .Hack//G.U. Volume 1: Rebirth in which you killed Doppelganger, you can try to kill a stronger version. Go to Delta Elegand Your Shadow and kill off all the monsters. Then go to any island other than the one with the temple and wait about fifteen minutes. Return to fight Doppelganger. He is much stronger than you and extremely difficult to defeat, even with two teammates. He recovers HP every few seconds. If you defeat him you will get two of three weapons he carries (if you defeated him in Volume 1) Heine's Invasion (twin blade), Heine's Shadow (broadsword), and Heine's Zero (scythe). Each are level 51 and are the most powerful in the game.
Dustin Mundy.

Have a saved game file from .hack//G.U. Vol. 3//Redemption to start with a level 70 Haseo.
Donny Painter.

Hint: Easy arena matches:
After unlocking the Divine Awakening in the story, just play defensively using counterattacks until your Moral gauge is full. Once full, use it to usually one-shot the opposing team.
kyle ludwig.

Hint: Antares' member address:
When you go to the crowning ceremony, talk to Antares two times and he will give you his member address.
matthew ng.

Hint: Dungeon trap rolling rocks:
In certain dungeons (the ones where the entire map is basically a spiral-like tower), when you reach the point where the rocks begin rolling down towards you, simply walk backwards just before that area. The rocks will disappear once they hit the bottom.
Brian Carpenter.

Hint: Defeating Atoli's Avatar:
Stay at a distance and constantly use Shot on her until she gets stunned, while dodging and slashing her ranged moves. It is imperative that you do not slash her until either you stun her with shot or she yells "Why won't you to look at me? Nobody ever looks at me!" and stuns herself. If you slash her up close when she is not stunned she will automatically use Mirage Of Deception and deal a good amount of damage to Skeith. Once you go into Data Drain mode it is not necessary to pursue her. Just wait for her to start flying around aimlessly, charge Data Drain, and shoot her with it when she charges at you.
Demetrius Vincent.