There are two 10+ Floor Dungeons in Quarantine. They are as follows:
Delta: Reincaranted, Purgatorial, Alter (You fight Cubia here for the last time. He is pretty tough, so level up. You will also fight Corbenik. Both of them are tough, and you fight one after another. These are the final bosses. This is 10 floors.)
Omega: Hidden, Darkside, Holy Ground (This is an extra area. It has exactly 15 floors. You face two guys at the end, and their tough.)
Completion bonus
Successfully complete the game to unlock the parody mode. Parody mode replaces the original text with joke dialogue. Note: This is only available in the Japanese version.
Defeating Goblins
Have some Wood magic equipped. Start the match, wait until the Goblin runs, then sits still for a moment. Then, use the magic. Goblins are all weak against Wood; two shots will kill them.
Dvd Secrets
The DVD that is included with the game has a secret section. It reveals secrets in the game. Enter the 'Data' menu and highlight the '.hack Pro Trailers' option. Press Right to highlight a circular icon. Press X or Enter to view the secrets.
Easier game
It is much easier if you have a Wavemaster in your party, whether it is Elk, Wiseman, or someone else; and also have a heavy blade person. This helps very much. Also keep your other members leveled up with you because you have to use them at times.
Get Sora's Member Address
Beat .hack//Quarantine once.
Goblin Armor
After completing all five Goblin Tag games, you will have goblin armor. When all of them are equipped, you will be able to summon a goblin on your enemies!
Secret Keywords
At the bottom of the ad for Quarantine in the January and February 2004 issues of Shonen Jump, the keywords ''Reincarnated Elusive Lyric Poet'' can be found.
Secret Keywords
During the last episode of Liminality, the keywords ''Sickened Imprisoned Fallen Angel'' flash across the screen in Japanese very briefly.