Secret :
Clear Data - Ex Game
Beat the game first, and at the end, the game will ask you to make a clear data. Do so, and save over your existing/last one if you wish. Now load the clear data, and you will end up at the Save Plate in the Elza with Hakase/Professor blocking the way. There are events and extra dungeons can ONLY be unlocked by this. With this, your UMN will also have the map "Omega System".
However, even this is like an epilogue because you can now trigger all these events and secret dungeons, you are still considered to be BEFORE the end of the game, before going to the Omega System.
Contributed By: Kouli
Extra Boss #2 - Baal Zebul
After finishing the game and saving a clear data, you may fight Baal Zebul in the Old Miltia (14 years ago) area. He's at the very end of the area, right after the second save point. Here's his rather unique stats:
HP: 99999
EXP: 99999
CPts: 9999
SPts: 9999
Break: BCBC/BBBB/CCCC (changes)
Weakness: Ice, Pierce, Strike
Contributed By: Antitype
Extra Boss #3 - Mikumari
After finishing the game and saving a clear data, you may fight Mikumari in the Desert secret dungeon. In addition, you must have defeated Dark Erde Kaiser. Mikumari will appear where you fought Scarabeille. Needless to say, it's an E.S. battle since the Desert is an E.S. dungeon. Here's its stats:
HP: 96000
EXP: 68000
Weakness: Beam, Aura, Fire, Strike, Ether-based attacks
When fighting Mikumari, it should be noted that when it is in "Pure" mode, if you cast "Down"-type ethers (down force, down ether, etc.) on it, it will heal you (either Heal All, Medica 2, or Refresh L).
Contributed By: Antitype
Extra boss - Phobos Rigas
After getting a clear save file (beating the game) use the UMN to go to the restricted area on the dammurung. Where KOS-MOS\'s ship used to be there is a gnosis, a boss called Phobos Rigas.
Hp = 55,555
Exp = 85,000
S.pt = 4000
C. pt = 6800
break = CBBC
Its rare item is auto recover (E.S. accesory) and its normal item is EMAX300 (also E.S. accesory). With that EMAX300, you can put one on each E.S, allowing all three to use their special moves.
Contributed By: spikegriffin
Get more than one Awakening III
When you're fighting Magulis in Labyrithos, you can also steal from his "Shadow" every time he creates ones to get Awakening III and Skill Drug E. The Awakening III can be sell for 500000 to repay the debt (G2 campaign #32)
Contributed By: AVAVT
Getting more than one Awakening II
It is possible to steal Awakening II at the start of your battle against Orgulla, and once more each time she uses the "Manes Restraint Program" ability and changes back to her starting form (with the green sword).
Contributed By: NercesK
Getting more than one Awakening IV
You can steal the Awakening IV from the Patriarch in Omega System and then fight him again with the clear save file to steal more.
Contributed By: AVAVT
Secret Dungeon #1 - Desert (E.S)
Load the clear data and talk with Hakase/Professor that's near. Now talk to Captain Mathews and select the second option to get back to Second Miltia to look for Kyouju(another word for professor in Japanese). While you are Second Miltia, go to the first sector of the street area. Now head up the stairs that's near the save and UMN plates. Take the room to the left. Enter the room and talk with Kyouju. You will get "Sequencer B" and now head to an UMN plate. Select the fifth option which is the Ormus Mobile Fortress. At the first intersection, head to the right then up to check out the Forbidden Device. Select the first option to dive into an Encephalon. You will be at the first secret dungeon where you use your E.S. Defeat the boss in this dungeon and get Sequencer C for the next dungeon.
Contributed By: Kouli
Secret Dungeon #2 - Industrial Facility (Character)
Use the UMN again, and select the second option which is MOMO's Encephalon (Summer). Head to the right for the next area. Continue to the right to the next area. Now in this area, go right a bit, then NW for a little house. Destroy it and reveal yet another Forbidden Device. With the Sequencer C, dive into the Encephalon for the second secret dungeon. Defeat the boss in this area to activate an elevator that leads you to the end area of the secret dungeon. Within this area, you will need to activate G2 Campaign No.21 to do the puzzle here. Clear the puzzle and get the Mufufu Book along with Sequencer A.
Contributed By: Kouli
Secret Dungeon #3 - Sky Ruins (Character)
Go to Kyouju's place in the first section of the street area on Second Miltia. Go down stairs and check the Forbidden Device here. Thanks to the Sequencer A, you can dive into the Sky Ruins which is the third secret dungeon. Defeat the bosses in this area to get to the item chest that contains Decoder 12. Use it to open a red door that's also in the Sky Ruins to get Sequencer D.
Contributed By: Kouli
Secret E-mail Address On A Clear Save Data
After, beating Dark Erde Kaiser, go onboard the Elsa to its Robot Academy. Talk to Campari to get a real E-mail Address to get some "clues." After getting these 3 "clues," go to the address given to input the 3 codes to unlock some cool Xenosaga Episode II: Jenseits von Gut und Bose Extras!
Contributed By: AlphaOmegaSid
Skill Points Bonus
If you load the Xenosaga Episode I or Xenosaga Episode I Reloaded clear data, not only will you get the swimsuit skills for Ziggy and KOS-MOS, your characters' starting Skill Points will also be based on your characters' levels when you beat the game of Xenosaga Episode I or Xenosaga Episode I Reloaded. The formular is character level * 30 + 600. Hence if your characters' levels are at Level 99 when you beat Episode I, they will have 99 * 30 + 600 = 3570 Skill Points to begin with. Xenosaga Freaks data will get you the swim suit for Hakase/Professor BTW.
Contributed By: Kouli
VS Black Erde Kasier
Go to the first Secret Dungeon - Desert and go all the way back to the room with an item chest and a Forbidden Device. To the north of this room, you can get off your E.S. Continue along the path. With the Sequencer D, you can dive into another secret location, the Space Coliseum. In here, talk with Black Hakase/Professor to trigger an event and eventually you will end up fighting Black Erde Kasier.
