You can only do this on Fifth Jerusalem after you meet Allen at the hotel before heading up to your room go to cliff in the park and an old woman will be bothering a worker. Talk to her and then go back to the hotel and a man will be sitting in a chair wondering where his grandma is.
After you talk to him go back to the park and talk to the worker the her grandson will show up and take her away. The worker gives you a good item and walks away. You can now blow up the pipe and open the aqueaduct and get the item there.
chaos Flawless
Beat game, save "Clear Data," load that data.
chaos Swimsuit
Floating Landmass Crypt through EVS: Use console at the entrance to the temple to gain access to a secret area.
Heaven's Door Accessory
Clear Ables Ark. Afterwards, go to the womans room in the Elsa and talk to Kamikaze. He will speak about Alby (the puppy) being lost. With that snatchet, head to the EVS plate and dive into the Durandal. Find Alby a few times and Alby will uncover Heaven's Door.
Now to equip the darn thing, go back to the Elsa and dive in to the CAT testing ground. Take the last cart on the right and it will lead you to a big door. Having defeated the Ables Ark and uncovered the Heaven's Door, you can open this door now.
The game will ask you if you want to simulate a battle with Universtros. Before you say yes, be sure to have a save somewhere before (and be particularly tough). The boss transforms into ID from Xenogears and has 999,999 HP. To beat him, make sure all of your E.S's don't have over 1 anime gauge at the same time or he will heal 149,000 each round.
Defeat him and head back to the Elsa and go to the B1 area, where the E.S's are. Talk to the droid under the structure and he will make the Heaven's Door equippable.
ID boss
You can only battle ID when you get the Weapons Room key from Citrine. ID is located in the CAT Testing Grounds on the E.V.S system. ID is a bit hard to defeat. Here is the best strategy I could come up with.
Before You Battle ID - I would wait to defeat ID until you get passed Abel's Ark (which has a boss battle I will be covering soon) so you can acquire Heaven's Door while you are at the CAT Testing Grounds. I also recommend buying about 80 Half Repairs, 50 All Repairs, and 99 Nano Repair Ms. Make sure all of your best E.S. equipment is equipped. You will also obtain Anima 3 when you defeat Abel's Ark, which will come in handy while battling ID.
Step One: When you first start battling ID, he is about as strong as an eleven year old. ID may seem like an easy boss at first, but once you are done defeating his first form, he will transform. You should not have any trouble defeating ID's first form. If you do, than there is no way you can beat his second form, even with help like this.
Step 2: ID's second form is the hard part. The following strategy was the one that worked best for me.
Unless the E.S. Asher is down and out, have him in the battle. The other E.S.s you have in the battle don't matter. The only thing you need to look for to decide which other E.S.s you should use is how much MAX Health it has. Sometimes there will be a blue arrow pointing to an E.S. which you can see once you use the E.S.s. If it is pointing at you, odds are, ID is going to beat the crap out of that E.S. Use the Guard command as the E.S. that the blue arrow is pointing to as that E.S.s turn.
Let the E.S. Asher be the only one to attack ID. Only use far distance attacks! Let the other E.S.s heal all the other E.S.s to keep you in the battle. Once the E.S. Asher has a full Anima guage, use his special attack. I would save the Anima you get until you have three full Anima guages.
ID will use an attack called Demon Lord if he starts to charge. You will get a heads up message when ID is charging. He will attack on his last turn. When he charges, I don't care if you have three full Anima guages, I don't care if the blue arrow is not pointing to you, YOU MUST BLOCK! Repeat this process until you defeat ID.
Jin Swimsuit
Labyrinthos, Margulis's Room: Treasure box.
Jin's Optimum Weapon
Go to the girl's bathroom and talk to the droid there. You'll need the weapon Bo Yan and a pack of beads to get Jin's most powerful weapon. Of course, you'll have to unequip the Bo Yan and equip another weaker weapon for him. You can find the so-called beads in Miltia.
Dive in the EVS Plate (Green Plate) And lunch in old church, Miltia. Search everywhere all around Miltia to find the whatever the hell that bead is. Here's an extra hint: You can find Jr's swimsuit somewhere in Miltia too. If you ever find a gate that needs the password, the password is 5150. You can get that darn thing and get the hell out of Miltia and go back to the droid in the girl's cabin and give the items to the droid.
Make sure that Bo Yan is unequipped or else you cannot let the droid make that weapon of Jin's.
Jr. Swimsuit
Miltia World Map, Right Side: Open Treaure box.
KOS-MOS D Unit V1
Buy it at a store.
KOS-MOS Swimsuit
Elsa, E.S. Bay: Complete Segment Address, access this data to confirm completion, talk to Theodore.
MOMO Swimsuit
Dabrye Mine's Entrance: Defeat Mai, return to entrance, play with the crane game a few times.
Shion Research Uniform
Steal from Red Testament's ally.
Shion Swimsuit
Pedea Island, West Side: EVS to this island and search Shion's housing for a treasure box.
Shion White Shirt
Steal from Red Testament.
Shions "Vector" uniform
Have a Xenosaga episode II clear game data save on your memory card, And at the title screen of Xenosaga episode III, start a new game. And it lets you load up a Xenosaga episode II save file. Once you do that, Shion will have her "Vector" costume, for the new game.
Swimsuit mode
Beat the game once to unlock Swimsuit mode in the Memory Code event viewer.
