Xenosaga Episode I Walkthrough

Proto Merkabah: Research Complex

Treasure TrackerProto Merkabah: Research: 0 of 12 collected

Check treasures here or beside their pickup instructions. Progress is saved in this browser.

After the cutscenes, leave the LocationThe cargo ship that becomes the party’s main transportation hub. bridge and save in the corridor outside it. You can return to the LocationThe cargo ship that becomes the party’s main transportation hub. for its shops and A.G.W.S. repairs until the final battle sequence, but LocationThe final dungeon. is enormous enough that forgetting your ItemTarget: 1, EP recovery/Low (+10 EP) will feel like a personal attack.

Equip SkillPrevents Poison. or Character AccessoryPoison Guard (Prevents Poison) against Enemy2,000 HP; Gnosis type. Weak to Ice. Rewards: 2400 XP; 24 T.Pts; 10 E.Pts; 6 S.Pts; 0G. Drops: Hemlock; rare Med Kit DX. Strategy: Equip Poison Guard or a Snake Hunter before entering Proto Merkabah, then exploit its Ice weakness and remove it before Poison turns a routine fight into an expensive one.. Once you reach the LocationThe laboratory floors within Proto Merkabah., SkillPrevents Instant KO. or SkillPrevents all status effects. protects the party from Demon’s instant-KO attack. Give Shion EtherShion: One-use-per-battle 9,999-damage attack against all enemies, earned after completing the Robot Part quest. and enough EP to cast it. If you want the reduced cost, equip the Character AccessoryEP Half (1/2 EP Usage).

Outer catwalks

Clear the catwalks
StepAction
1Leave the LocationThe cargo ship that becomes the party’s main transportation hub. and take the stairs down at the first fork.
2Go left at the bottom and destroy the boxes. One hides a Enemy2,000 HP; Gnosis type. Weak to Ice. Rewards: 2400 XP; 24 T.Pts; 10 E.Pts; 6 S.Pts; 0G. Drops: Hemlock; rare Med Kit DX. Strategy: Equip Poison Guard or a Snake Hunter before entering Proto Merkabah, then exploit its Ice weakness and remove it before Poison turns a routine fight into an expensive one..
3Return to the stairs, follow the lower catwalk around the parked ships, and defeat the Enemy2,400 HP; Mechanical type. Weak to Beam. Rewards: 1800 XP; 18 T.Pts; 0 E.Pts; 24 S.Pts; 0G. Drops: Junked Circuit B; rare Frame Repair A. Strategy: Use Beam attacks and clear it quickly. The outer catwalk places several between the Elsa and the first Research Lab elevator. at the end.
4Destroy the yellow wall fixture to reveal 1x Character AccessoryKO Guard (Prevents INSTANT KO) ().
5Return to the stairs and take the upper path through the middle.
6Follow the catwalk into the Research Complex.

Storage platform switches

Collect the storage-platform supplies
StepAction
1Follow the upper path until you reach the moving walkways, then take the lower of the two paths on the right.
2Destroy the crates beside the walkway. One contains a Enemy2,000 HP; Gnosis type. Weak to Ice. Rewards: 2400 XP; 24 T.Pts; 10 E.Pts; 6 S.Pts; 0G. Drops: Hemlock; rare Med Kit DX. Strategy: Equip Poison Guard or a Snake Hunter before entering Proto Merkabah, then exploit its Ice weakness and remove it before Poison turns a routine fight into an expensive one.; the others contain:
  • 2x ItemTarget: 1, +25% Max Frame Hit Points (FHP) ()
  • 2x ItemTarget: 1, EP recovery/High (+50 EP) ()
3Continue past the crates and climb down the ladder.
4Destroy the crates just south of the ladder:
  • 2x ItemTarget: All, HP & EP full recovery ()
  • 2x ItemTarget: 1, +50% Max Frame Hit Points (FHP) ()
5Head left past the blue vehicles and destroy the western crates for 2x ItemTarget: 1, HP recovery/High (300 HP) ().
6Go north and press the western yellow switch from behind, then head south and press the southwestern switch.
7Cross under the walkway to the east and destroy the crates for 2x ItemTarget: 1, EP recovery/High (+50 EP) ().
8Continue north and press the northern switch.
9Use the moving walkway to return upstairs, cross the platforms you raised, and follow the catwalk to the elevator.

Research Lab

The elevator drops you at Floor 40. Enemies stationed on the stairways do not return after you defeat them, while enemies inside the side rooms can respawn.

Explore Floors 41 through 44
StepAction
1Climb to Floor 41, enter the room on the left, and examine the green display for a scene about Realian history.
2Return to the stairs and climb to Floor 42. The attached room has another green display and an optional Enemy2,000 HP; Gnosis type. Weak to Ice. Rewards: 2400 XP; 24 T.Pts; 10 E.Pts; 6 S.Pts; 0G. Drops: Hemlock; rare Med Kit DX. Strategy: Equip Poison Guard or a Snake Hunter before entering Proto Merkabah, then exploit its Ice weakness and remove it before Poison turns a routine fight into an expensive one. group, but the glass barrier blocks the useful route for now.
3Continue to Floor 43 and enter the first room on the right. Destroy the container and open the chest for 2x ItemTarget: 1, +50% Max Frame Hit Points (FHP) ().
4Enter the room on the left, use the save point, and examine the central display.
5Climb to Floor 44 and destroy the door in the middle of the room for 1x ItemTarget: 1, Restore Full HP/EP ().
6Open the chest behind it for 1x Character WeaponMOMO endgame weapon: Physical Attack +20; found on Proto Merkabah Floor 44. ().
7Continue left and pass through the lower blue-gray door into the second stairwell.

Segment Address 17

Collect Character WeaponUser: Jr.; endgame gun from Segment Address 17; uses BD900 ammunition.
StepAction
1Descend to Floor 43 and enter the room.
2Use the red switch on the right to open the connection to the control room.
3Destroy the wall fixture on the left to expose SidequestSegment Address 17 is opened with Decoder 17..
4Key ItemItem required to open Segment Address No. 17 came from the Third Tower.
5Open the door, collect Character WeaponUser: Jr.; endgame gun from Segment Address 17; uses BD900 ammunition. for Jr., and mark it .
6Save in the connected control room. The full Segment tracker updates with the same progress.

Open the Floor 44 route

Unlock the boss route
StepAction
1Return to the second stairwell, descend to Floor 42, and press the switch at the far right. This opens the blocked route on Floor 44.
2Descend to Floor 41, enter the room, go to the far right, and take the southern door.
3Open the chest for 1x A.G.W.S. AccessoryPrevents Wear ().
4Return to the Floor 43 control room and save.
5Climb to Floor 44 and take the newly opened southern route near the Character WeaponMOMO endgame weapon: Physical Attack +20; found on Proto Merkabah Floor 44. room.
6Head right and destroy the wall fixture in the back corner to expose a hidden passage.
7Destroy the cylinders inside for 1x Character AccessoryPrevents EP damage; EP Guard can be extracted from it. ().
8Backtrack left, defeat the second robot, and approach the jump point.

Proto Dora

Heal HP and EP before jumping. Equip Damage -10 or your best defensive skills. Give your fastest healer a Boost point, and equip EtherJr.: Steals an item from one enemy., EtherShion: Steals from one enemy and can inflict Instant KO., or Tech AttackMOMO: Transformed MOMO Tech Attack with a chance to steal a rare item. if you want the one-time A.G.W.S. AccessorySpeed +50%.

After the battle, Key ItemItem required to open Segment Address No. 6 is added to your inventory.

Key ItemItem required to open Segment Address No. 6 opens the final SidequestOne of eighteen numbered locked containers opened by the matching Decoder. in the next section.

Continue with Proto Merkabah: Planetarium.