Part 36

From the entrance, head east to find a small [Ruby] chest near a large industrial pipe. Enter the pipe, which can be used a few times before appearing in the east. Note an entrance blocked by a crate, which is important for hunting Grovis on the way out.

Enter the blue-lit door down the stairs and continue.

You will eventually be in the southwest area. A pipe running east leads to a [Flame Edge] (Lv 1/8, ATK 18/22, Fire-elemental). Avoid equipping it as many monsters are fire-type.

Continue west to a blue-lit door. Take the NE path at the fork for a dead-end with a [Revival Dust] and an [Instant] sword (LV 8/12, ATK 18/23, Increase ATK on Level-Up). The Instant sword is useful but less powerful than a fully upgraded Platinum Edge.

Backtrack and take the left route at the fork.

You'll find another entrance and an extended pipe near an "on" switch. Flip the switch to "off" (red-colored) and enter the door you passed earlier for a fight (#3) with ten enemies. The Weak Enemy skill is effective here.

The small platform to the south controls a crane that moves the extended pipe away from the opening near the previous switch.

Return to the switch location and continue to the first healing spot. The switch there opens a path to chests #5-7: [Studded Leather] (LV 6/8, DEF 14/16), [Reco's Grass], and [Rage Weaken Dust]. Ignore the "A" door as it leads to the submarine dock, which is not useful now.

Now, enter the southeastern area marked "the pipe maze."

Take path C, fight battle (#4), and collect treasures #8-10: [Power Nut], a light-elemental [Ray Sword] (LV 6/8, ATK 26/30), and a [Crown Knife] (LV 4/8, ATK 6/9). Path "F" returns you to the main 6-pipe room.

Take path "D" to a switch room. Flip the switch to change a movable pipe, return via path "H", and re-enter path "D". This leads to skirmish (#5). Exit south, flip the switch there (movable pipe to position #3), and use path "G" to return to the main room.

Take path "E" to find the eleventh treasure, a [Rage Life Nut]. Use pipe "J" to enter another room with a switch that moves a pipe elsewhere. Pipe "B" returns you to the far entrance. If low on health, consider returning to the healing point near the submarine dock.

Take path "A" again to reach a connected corridor.

You will find a door leading to a heal/save room and a "Yagun Alpha Clearance" elevator. Heal and save, then descend to confront Yagun. Party members can be re-selected before the battle, but Sania is mandatory.

Phases: The fight begins with Yagun and Hippogriffs.

Strategy: On Turn 2, after the Hippogriffs move closer, use Lv2 Weak Enemy to deal with them. Avoid grouping up as Yagun uses Confusion. With weakened minions, the fight becomes more manageable. Fight Yagun directly as he is immune to status effects.

Escape Phase: After the battle, the party can be re-selected before a 20:00 timer starts. The goal is to reach the submarine dock. Save in the barracks before the timer begins.