Xenosaga Episode I Walkthrough
Encephalon: Jr. and Tiamat
Treasure TrackerEncephalon: Jr. and Tiamat: 0 of 15 collected
Check treasures here or beside their pickup instructions. Progress is saved in this browser.
Back to Jr.
When you return as Jr., move MOMO to the back row. If Jr.’s group needs to catch up with Shion and chaos, you can go back north to the searchlight area and farm the enemy groups there before continuing.
| Step | Action |
|---|---|
| 1 | Go left into the storefront and destroy the box in the back for 1x ItemTarget: 1, Restore Full HP/EP (). |
| 2 | Head down and left, then enter the subway. |
| 3 | Take the unblocked stairs down and work your way left to the save point. |
| 4 | Save, then go up and back to the right. There is a doorway in the jumbled wreckage. |
| 5 | Destroy the box to the left of that doorway for 2x ItemTarget: All, HP & EP full recovery (). |
| 6 | Go a little farther left and destroy the window. The doorway hidden in that back corner is important. |
| 7 | Return right, go through the doorway in the wreckage, then head left. |
Segment Address 15 and Angel Ring
Examine the red door to find SidequestSegment Address 15 is opened with Decoder 15..
You picked up Key ItemItem required to open Segment Address No. 15 from the Hydra in the LocationThe giant Gnosis area entered through the copied city. flower shop.
Open the door, collect the Character AccessoryEP Half (1/2 EP Usage), and mark it . The Character AccessoryEP Half (1/2 EP Usage) halves the wearer’s EP costs, which makes it especially useful on MOMO or your primary healer. You can also open Segment 15 in the full tracker.
Clear both sides of the station
| Step | Action |
|---|---|
| 1 | Return to the save point and take the stairs at the top-left. |
| 2 | Destroy the benches along the back wall for 1x Veil (). |
| 3 | Fight the Enemy640 HP; Mechanical type. Weak to Spirit. Rewards: 380 XP; 22 T.Pts; 6 E.Pts; 20 S.Pts; 600G. Drops: Med Kit S; rare Med Kit DX. Strategy: MOMO can put it to sleep while Jr. and Ziggy attack. Spirit damage exploits its weakness, and the generous money and points make these groups useful for catching Jr.’s party up. units, go down the stairs, and head right. |
| 4 | Defeat the next group, then destroy the box at the dead end for 5x ItemTarget: 1, Removes all Mental Status Effects (). |
| 5 | Return to the save point and save unless you wanna do this again if you screw up. |
| Step | Action |
|---|---|
| 1 | Take the stairs beside the save point. |
| 2 | Don’t destroy the bench in the middle of the platform unless you really want to fight a bunch of Kobolds. |
| 3 | Destroy the box at the far left for 2x ItemTarget: 1, +25% Max Frame Hit Points (FHP) (). This clears the stairs down. |
| 4 | Take the ramp on the left and defeat the Enemy300 HP; Gnosis type. Weak to HP recovery. Rewards: 380 XP; 16 T.Pts; 20 E.Pts; 8 S.Pts. Drops: Neuro Stim; rare Cure-All. Strategy: It disguises itself as a human and can Confuse the party. Damage it with Medica or recovery items instead of ordinary attacks. with EtherMOMO: Medium HP recovery for one ally or enemy., EtherShion: Low HP recovery for one ally or enemy., or recovery items. |
| 5 | Work your way left, forward, down, and left. |
| 6 | Destroy the vending machine and open the revealed chest for 1x Character AccessoryAnti-Veil support effect (). It prevents enemies from applying Veil, which would reduce the target’s Ether effectiveness by 25%. |
| 7 | Backtrack across the ramps, then take the right-hand route and leave through the eastern exit. |
Wrecked trains and the sewer
MOMO can put the Enemy640 HP; Mechanical type. Weak to Spirit. Rewards: 380 XP; 22 T.Pts; 6 E.Pts; 20 S.Pts; 600G. Drops: Med Kit S; rare Med Kit DX. Strategy: MOMO can put it to sleep while Jr. and Ziggy attack. Spirit damage exploits its weakness, and the generous money and points make these groups useful for catching Jr.’s party up. units to sleep, and her Pierce attacks are useful against the Gnosis groups here.
| Step | Action |
|---|---|
| 1 | Head right and defeat the Enemy980 HP; Gnosis type. Weak to Spirit. Rewards: 480 XP; 24 T.Pts; 2 E.Pts; 6 S.Pts. Drops: Med Kit S; rare Tech Upgrade A. Strategy: It can heal its allies, so focus on the Bugbear first. Spell Ray and Lunar Seal exploit its Spirit weakness. and Kobolds. |
| 2 | Take the ramp at the far right into the train car. Destroy the back wall for 1x ItemTarget: 1, EP recovery/Mid (+20 EP) (). |
| 3 | Continue right, go down the next ramp, defeat the Gnosis, and climb the hidden ladder against the back wall. |
| 4 | Defeat the Enemy300 HP; Gnosis type. Weak to HP recovery. Rewards: 380 XP; 16 T.Pts; 20 E.Pts; 8 S.Pts. Drops: Neuro Stim; rare Cure-All. Strategy: It disguises itself as a human and can Confuse the party. Damage it with Medica or recovery items instead of ordinary attacks. on the catwalk, then destroy the object at the far left. It will fall and break something below. |
| 5 | Return to the train car, go down the ramp, and take the upper-left path. |
| 6 | Open the newly revealed chest for 1x Character AccessoryA-Poison Guard (Prevents Attack Poison) (). |
| 7 | Return to the train car and go out through the back. Cross the ramps and the next train car, defeat the Enemy980 HP; Gnosis type. Weak to Spirit. Rewards: 480 XP; 24 T.Pts; 2 E.Pts; 6 S.Pts. Drops: Med Kit S; rare Tech Upgrade A. Strategy: It can heal its allies, so focus on the Bugbear first. Spell Ray and Lunar Seal exploit its Spirit weakness. and Kobolds, then enter the sewer at the top of the screen. |
| Step | Action |
|---|---|
| 1 | Work east through the sewer and defeat the Gremlins. |
| 2 | Beside the overhead bridge, destroy the wall panel for 4x ItemTarget: 1, +25% Max Frame Hit Points (FHP) (). |
| 3 | Follow the wall right and up, climb the stairs, then climb the small ladder and go through the door Shion and chaos unlocked. |
| 4 | Open the chest for Key ItemItem required to open Segment Address No. 12. SidequestSegment Address 12 is opened with Decoder 12. comes later in the LocationThe three-tower dungeon reached after the Kukai Foundation attack., so the full tracker will hold this progress until the reward becomes available. |
| 5 | Return through the door, climb down, and continue east to the larger ladder. |
| 6 | Before climbing out, remove any accessories that Shion or chaos will need. The perspective changes back to Shion when you reach the surface. |
Shion and chaos in the forest
Set SkillPrevents Poison. on Shion and chaos, save, then head right.
| Step | Action |
|---|---|
| 1 | Fight the Basilisks, then destroy the rock near the first group and use the hidden tunnel. |
| 2 | Open the chest at the campfire for 1x Key ItemOpens from Key Items for three Lv 10 KOS-MOS XenoCards; found in the Encephalon forest campfire chest. (). |
| 3 | Return to the main path and continue right. You’ll see a bunny in the background getting juice from carrots. |
| 4 | On the next screen, follow the path around to the right, defeat the Troll, and continue until you pass beneath the log bridge. |
| 5 | Take the left branch first. Defeat the Kobolds and Enemy980 HP; Gnosis type. Weak to Spirit. Rewards: 480 XP; 24 T.Pts; 2 E.Pts; 6 S.Pts. Drops: Med Kit S; rare Tech Upgrade A. Strategy: It can heal its allies, so focus on the Bugbear first. Spell Ray and Lunar Seal exploit its Spirit weakness., then destroy the rock walls to enter the hidden path. |
| 6 | Follow the path across the water, destroy the next wall, and defeat the hidden Gremlin. |
| 7 | Destroy the column in the middle of the pond and open the chest for 1x Character AccessoryVeil support effect (). |
| 8 | Retrace your steps to the fork and take the other path to the next screen. |
Decoder 3 in Bunnie’s house
| Step | Action |
|---|---|
| 1 | Go up and watch the bunny play near the stump before running back into its house. |
| 2 | Destroy the nearby stump for 1x ItemTarget: 1, EP recovery/Mid (+20 EP) (). |
| 3 | Head down, around, and left. Defeat the enemy groups near the waterfall. |
| 4 | Destroy the pulley to lower the bridge, cross it, and go through the tunnel. |
| 5 | Cross the bridge on the other side and destroy the oversized carrots for 4x Key ItemUsed to lure Bunnie out of house (in encephalon) (). |
| 6 | Go back past the tunnel and destroy the hollow tree on the right for 2x ItemTarget: 1, +50% Max Frame Hit Points (FHP) (). |
| 7 | Return through the tunnel and follow the route back to the stump outside Bunnie’s house. |
Place one Key ItemUsed to lure Bunnie out of house (in encephalon) on the stump. Shion will hide while Bunnie comes outside and circles the stump. Wait until you can move, keep the stump between Shion and Bunnie, then run for the door. If you get there first, Bunnie will admit defeat and let you inside.
Open the chest for Key ItemItem required to open Segment Address No. 3. It does not appear you can watch TV, take a shower, sleep, or open the fridge. Just get the key and leave. SidequestSegment Address 3 is opened with Decoder 3. is back at the LocationThe Foundation colony and its City Sector 26 & 27. Dry Cleaners, so the full tracker will save the SidequestA numbered key that opens the Segment Address with the same number. until you can reach the door.
Leave the house, go left beneath the bridge, then follow the small path behind the house and around to the right. If you get stuck, you may be directly behind the house; back up until you can find the path toward the top of the screen.
Optional return for PM Card A
After the cut scenes, the party is reunited. You could go right toward the church, but there is one useful reason to make the long trip back.
In case you’re curious, Shion was level 30 in my game and had just acquired Tech AttackShion: Beam Ether Tech Attack against all enemies.. This is what I save up her Battle SystemBattle reward spent on Tech Attacks or character statistics. for.
Prepare for Tiamat
Head right, cross the bridge, and enter the church through the front door. Watch the cut scenes, save, examine the door at the far left, and speak to Febronia for a full HP and EP recovery.
Shion and Jr. are mandatory for the next battle. chaos is a solid third party member and can concentrate on healing. MOMO is also viable if you want her to use EtherMOMO: Once per battle, transforms MOMO into Star Wind form. and Tech AttackMOMO: Transformed MOMO Tech Attack with a chance to steal a rare item. to steal while Shion and Jr. attack.
Set Confusion protection on everyone. Equip Scope or set SkillDisplays enemy HP information. so you can see exactly when Boss6,400 HP; Gnosis type. Weak to Beam and Pierce; some sources report that the active weakness changes with its last attack. Rewards: 15600 XP; 180 T.Pts; 160 E.Pts; 120 S.Pts; 0G. Drops: B-MAX Circuit; rare Revenge Power. Strategy: Shion and Jr. must each land one finishing blow. Let Shion finish the first life to suppress Ruined Earth, then let Jr. finish after Tiamat restores about 1500 HP. Keep the third character on healing and never let them deal the final damage. is ready for each required finishing blow. Heal your A.G.W.S. units if you intend to use them for the first part of the fight, but plan to deliver both finishing blows on foot.
Tiamat
This is a bit of a fun battle. The EtherShion: One-use-per-battle slash attack against all enemies, earned from both Robot Arms. can do about 500 damage, and a well-developed Tech AttackShion: Beam Ether Tech Attack against all enemies. can do more than 1,000 in a single attack. If you’ve got Character AccessoryW Special: with 6 AP, Square, Circle, Circle or Triangle, Circle, Circle executes two Fast-slot Tech Attacks. on Jr., 6 AP lets him use two Tech Attacks in one turn. If two characters get K.O.‘d, the fight becomes MUCH harder. Don’t let that happen.
Once you defeat Boss6,400 HP; Gnosis type. Weak to Beam and Pierce; some sources report that the active weakness changes with its last attack. Rewards: 15600 XP; 180 T.Pts; 160 E.Pts; 120 S.Pts; 0G. Drops: B-MAX Circuit; rare Revenge Power. Strategy: Shion and Jr. must each land one finishing blow. Let Shion finish the first life to suppress Ruined Earth, then let Jr. finish after Tiamat restores about 1500 HP. Keep the third character on healing and never let them deal the final damage., you’ll hear the same What Child Is This piano music and get an interesting cut scene or two.
Continue with Kukai Foundation: Gnosis Attack.