Abiotic Issue Hydroplant Walkthrough

Our Abiotic Issue Hydroplant Walkthrough will let you know how one can discover the survivors, reactivate the spillway programs, and make your strategy to The Reactors!

Now that you’ve got accomplished the Safety Sector, it is time to begin exploring the Hydroplant in Abiotic Issue. It is a large space with rather a lot to uncover (and a brand new Portal World, too!), so let’s get shifting.

Enter the Hydroplant

As quickly as you exit the Safety Sector, you may see a fork within the highway.

Head to the left first. On the finish of this tunnel, you may discover a blast door resulting in the Knowledge Farm, of all locations. Open it.

I strongly recommend returning again to your base to craft a number of gadgets. This is what to craft and why:

Tech Bandages: These will cease critical bleeding. Should you use common bandages, it may take a number of to cease the worst bleeding.Slushie Bombs: These can be utilized to freeze enemies; they’re particularly crucial for the Hydroplant’s model of Safety Robots.Nyxshade Seed: This may be traded to Warren within the Safety Kiosk within the Workplace Sector Foyer for a GATE Safety Key after you enter The Evening Realm for the primary time. After getting it, you may then open a GATE Safety Crate and get a Evening Cross, a Trinket which causes Safety Robots to disregard you so long as it is outfitted (except you assault them).

The Evening Cross, specifically, is extremely helpful. Hydroplant Safety Robots — known as Protection Robots — are outfitted with grenade launchers they usually can kill you fairly shortly. The Evening

You also needs to develop some Rope Crops from The Mycofields. You will need not less than one for the Hydroplant; it makes return journeys to the Portal World of Voussoir a lot simpler.

The Hydroplant (particularly the beginning space) is completely riddled with Snipers. Should you take successful, you’ll have Extreme Bleeding and it may take a number of common Bandages to cease the bleeding. Tech Bandages can cease the bleeding in a single shot.

Head down the trail to the Hydroplant. Sadly, entering into this space will not be as simple as you may need hoped — the doorway is flooded. Moreover, Dr. Cahn is hanging round once more.

There’s a set of stairs to the left of Dr. Cahn. Head up in and you will find a keypad. Work together with it to activate pumps that may drain the water.

Return downstairs and you’ll open the blast door now. Comply with the trail via the cave, then stroll forward into the Hydroplant. You will see a Test-In Terminal; activate it so you’ve a respawn close to the beginning of this space.

Discover the Survivors

You will instantly get shouted at by somebody named Jonas; he warns you that there are snipers within the space and you might want to get down. He is completely appropriate — be aware the orange laser within the background of the picture under.

Behind Jonas are two paths: to the left is the Tram Station and to the suitable is a ramp taking place.

First, run to the Tram. Activate it as soon as and instantly return to be able to unlock the Tram for future use; this Tram will go straight to The Workplace Sector foyer.

Run again to Jonas, then head down the ramp. Make a proper and you may enter a machine room of kinds. On the wall, you may see a wierd yellow pipe.

Dismantle this pipe to get two new crafting supplies: Hydro Pipe and Rotary Pump. Each of those sources will turn out to be useful for crafting new gadgets.

Climb up the purple ladder and stroll across the catwalk. Open a rusty door and you will find two Electro-Pests simply forward of you. Kill them, and you may encounter a Peccary Sow simply behind them.

Proceed shifting ahead and you may enter a room with a yellow ladder.

The trail above the yellow ladder takes you on to the Tram; there isn’t any must go that means simply but.

Go down the steps to the suitable. Open the blast door to the suitable, then head left and you will find one other Electro-Pest subsequent to some gadgets you may loot, together with a Barrel.

Stroll up the steps on the far finish of this hallway and you may enter a decrease walkway simply in entrance of the Tram, providing you with complete cowl from the sniper right here.

Transfer ahead and you may see a number of crates you may loot. Somewhat additional forward is 2 doorways beneath a staircase. The door forward of you is locked, however the right-hand door may be opened. There’s one Electro-Pest inside together with some loot.

Go up the ramp and you may see a constructing marked “Transformers” with a ladder to the suitable of the door.

Go up the ladder and you will find the Order Sniper that was capturing at you. Should you can shoot him within the head, you may drop him earlier than he can shoot you. Be sure that to cut up his physique as you may doubtlessly get an merchandise for a neat hat.

There’s a direct path to get into the constructing you might want to attain slightly below the Sniper’s nest. Consider it or not, it is truly higher to go over the buildings through the roof and open up entry from the opposite aspect; you may have the chance to open up a number of locked doorways for those who take this route.

Climb up one other ladder and you will find some loot within the tower. The next step will likely be to recover from to the following roof by leaping onto these assist beams.

Once you stand up on this roof, you may discover a small Order camp and an Order crate.

Stroll ahead some extra and you may see one other guard tower forward of you. It’s best to bounce onto it, however watch out — you are about to come across a brand new kind of Safety Robotic.

Neither of those jumps are too far and you must be capable to make them with out the Dangling Gravity Dice Trinket outfitted. Nonetheless, the Dangling Gravity Dice Trinket is without doubt one of the most helpful Trinkets to have and also you should not be with out it for those who can keep away from it.

Once you’re on prime of the tower, you’ve a number of attainable routes:

Don’t go down the steps, particularly if you do not have a Evening Cross — a Protection Robotic is patrolling the primary ground of this tower and you do not need to be trapped in shut quarters with a robotic outfitted with a grenade launcher.

As an alternative, go down the ladder to your proper. This can take you right down to the highway on the opposite aspect of a locked gate. Flip left, and switch left once more and you may see a staircase taking place.

Stroll down these stairs.

To your proper, you may see teal doorways, each of which may be unlocked. You may undergo both set, however needless to say a Breacher is within the left-hand room.

It is price it to run round and unlock the entire doorways. There is a honest quantity of stuff you may loot right here. Be sure that to smash these consoles:

These may give you new crafting supplies comparable to Coil Windings.

There is a Dr. Manse hologram in right here, naturally. Exterior of that, yow will discover the survivors of this sector towards the again of this space.

Converse with them and you will get your 4 goals for the Hydroplant:

Reactivate Electrical StationReboot Spillway ComputerOpen Circulate Valves within the ReservoirBlock Interference on Transmission Tower

Reactivate the Spillway Programs

You may reactivate the Electrical Station in the identical room with the survivors. The opposite goals will take a bit extra work. You can even seize the map for the Hydroplant on this room.

Undergo the double white doorways on the opposite aspect of the room. Stroll straight forward previous the turbine and previous the hearth extinguisher on the wall. Flip left and you may see the orange door underneath the ramp that you simply could not unlock earlier. Unlock it.

This opens up a path on the decrease walkway that leads again to the Tram and retains you out of sight of the Sniper. Now’s a superb time to return to your base, so head again house and drop stuff off.

Return to the survivors. Stroll via the room with the generators and head outdoors to the place the place you got here down the steps.

The purple room on the suitable has gadgets you may break to get Cogs and Motors, two new crafting supplies.

Head up the steps and switch proper. Maintain strolling till you see a bridge with a Protection Robotic on it, then flip round.

Head towards the target that claims “Reboot Spillway Laptop.” We can’t be doing this simply but; we’re merely heading to this constructing.

Transfer over this lengthy bridge and you may see a few Order troopers outdoors. Kill them. Head contained in the constructing and go up the steps proper subsequent to the doorway. On the highest ground, you may see a bald man sitting on the bottom.

That is Dr. Hoff. Converse with him and he’ll provide the crafting recipe for the Diving Swimsuit.

Loot the world as a lot as you may, then return house. Craft a Diving Swimsuit. Be sure that to carry not less than 1 Rope Plant with you.

As soon as once more, we will return to the constructing the place the survivors are positioned.

Search for this door within the room with the big generator generators.

Exit this door and switch proper. Flip round and unlock the double doorways behind you.

Face the railing.

Equip your Diving Swimsuit and bounce into the water.

Behind you is a bay with a submarine. It is not price going into this space simply but; you may’t open any of the doorways since you do not but have the Keypad Hacker (Tier 5).

Swim towards the tower with the purple gentle on prime of an antenna; this is similar location as the target “Open Circulate Valves within the Reservoir.”

Get to a degree about midway between the submarine bay and the tower.

Dive underwater and you may see a kind of circuitry with purple spots on it.

These purple spots are Reservoir Growths, a brand new crafting materials. Spend a while amassing a bunch of them. Reservoir Growths are one of many uncommon crafting supplies within the GATE Facility that may regenerate on their very own; it is a good suggestion to gather as many as now you can and are available again at a later time once they regenerate.

This isn’t the one new useful resource yow will discover down right here; you may shortly spot giant inexperienced leaves that appear like seaweed.

That is Murkweed. It is utilized in some cooking recipes, and it may also be used to craft cold-weather gear for those who want it. Like Reservoir Growths, Murkweed regenerates after a while, so it is price it to gather a superb batch of it now.

Swim across the space till you see a tunnel with inexperienced lights on both aspect.

Once you discover this tunnel, swim straight as much as refill your oxygen meter.

Dive again down and swim into the tunnel. You will see an indication that claims “Detector.” Head in that route by swimming barely up and going over a railing. Drop again down and undergo an open steel grate.

Ultimately, you may attain what seems to be a lifeless finish.

You are getting shut.

Lookup and to your proper and you may see open pipes with lights in them.

Swim into these pipes and switch left. You will see a fan behind a grate with a inexperienced gentle behind it. Swim to this fan, then flip left. You will enter a big room with a fan within the roof.

Go down and you may see one other open door. Undergo it, go straight forward, and you may see a vent under you with a inexperienced gentle subsequent to a different inexperienced gentle on the wall

Head down into this vent and switch left. Swim underneath the pipe.

When the pipe is now not above you, swim up a bit and switch proper. You will see a spinning fan within the ground with a white gentle above it.

Swim towards this fan. You are most likely operating low on oxygen, however don’t fret — you are virtually out of the underwater space.

Swim straight up and you may emerge inside of a big chamber with a bunch of orbs on the inside wall and a portal above you.

The golden orbs on the wall may be smashed to get Photon Receptors; that is the ultimate crafting materials you might want to make the Keypad Hacker (Tier 5). I like to recommend amassing a complete of 32 (2 stacks). There may be additionally a Dr. Manse hologram you may activate to study some extra lore.

Climb up the lengthy yellow ladder. This can take you to the outer deck of the tower.

Face the Hydro Plant and place a Plant Rope over the sting.

Inserting a Plant Rope right here will mean you can extra simply return to Voussoir with out having to swim via the underwater maze.

Inside, you may discover a diagram on a whiteboard which you could look at. You will additionally discover a button that claims “Open Dam Circulate Valves” which you could push. Push the button and you may full one of many 4 goals for the Hydroplant (Activate Electrical Station).

At this level, you can bounce proper into Voussoir. Nevertheless, I like to recommend returning house and dropping off extra gadgets and kit. You can even use this chance to craft the Keypad Hacker (Tier 5) so you’ve it for once you want it. Go away your Diving Swimsuit behind; Voussoir has no underwater areas that require it.

We’re about to go to Voussoir, a Portal World set atop a frigid mountain. Staying heat is necessary, so I like to recommend shopping for 4 Mugs of Espresso on the most handy place to you. Keep in mind, there’s a Espresso Machine within the Safety Workplace subsequent to the Cafeteria.

You will additionally need to be sure to have a fully-charged Power Pistol. I encountered the Reaper right here throughout a climate occasion, so it is attainable for him to look anyplace (together with Portal Worlds) now. It’s best to at all times carry an Power Pistol with you for those who can.

You are going to be going through a number of dozen troopers in Voussoir and a boss towards the top. Be sure to have ample ammunition, loads of therapeutic provides, and first rate armor earlier than heading there.

Now that you’ve Coil Windings, Rotary Pumps, and Photon Receptors, you may craft a moderately attention-grabbing new merchandise: the Portal Bathroom.

The Portal Bathroom is powered by a Laser Emitter firing into the again of it. The principle upside of the Portal Bathroom is the truth that it is a lot sooner than another bathroom. It does have two downsides, although.

Firstly, it does not retailer any Baggage of Feces, so that you lose out on an necessary useful resource. The opposite drawback is that utilizing it has an opportunity to teleport you to a Portal World with a literal ocean of poop. (Hey, all of it has to go someplace).

Craft a Battery (Makeshift) and cost it as much as full energy both by placing it in a Charging Station or plugging it in an open plug. Craft a Crafting Bench and a Private Teleporter, and cost the Private Teleporter.

Be sure to have the Crafting Bench, charged Battery (Makeshift), charged Private Teleporter, and a Screwdriver in your stock earlier than sitting on the Portal Bathroom. Should you use it and you aren’t getting sucked via, you may drink a bunch of espresso to drive your self to go to the lavatory once more.

You will want the yellow or orange lavatory debuff for it to work, and the teleportation ought to occur as quickly as you sit down. If it does not work, instantly stand up and take a look at once more so long as your lavatory debuff is unhealthy sufficient.

When it triggers, you may end up in a wierd purple Portal World. Flip round and you may see an ocean that appears moderately… brown.

Yep, that is an ocean of Feces. You may even take a Barrel with you and get a literal barrelful of poop. Why? As a result of science.

Place the Crafting Bench and join the Battery (Makeshift) to it. Then use the spare Private Teleporter it’s a must to sync to it. Be extraordinarily cautious to not by chance overwrite your authentic Private Teleporter.

Should you do mess up, you may stroll into the ocean of poop (ew) and you will be teleported again to the GATE Facility.

As soon as you’ve got synced a Private Teleporter, disconnect the Battery (Makeshift). A Crafting Bench must be powered to sync a Private Teleporter, but it surely doesn’t need to be powered to function the goal for a Private Teleporter. There is no GATE energy era right here, so that you needed to carry some electrical energy with you within the type of a battery.

Strolling towards the ocean of poop will get you an achievement. You can even fish a particular model of the Portalfish known as the Entropic Portalfish which may be butchered for Exor Hearts once in a while.

In any case, return house. You may then stash the Private Teleporter someplace.

There’s one different factor you may construct now with the entire fancy new stuff you bought from the Hydroplant: Laser Turrets. Laser Turrets are a bit expensive, however they’re top-of-the-line defensive choices you’ve.

Just like the Portal Bathroom, Laser Turrets must have a Laser Emitter capturing into the crystal within the again. So long as they’re powered, the Laser Turrets will mechanically goal and shoot any hostile enemies.

Strategically inserting a number of Laser Turrets all through your base could make combating most enemies rather a lot simpler.

Be warned, nevertheless — Laser Turrets do not do a complete lot of injury to chunkier enemies comparable to Safety Robots (or their later variations). They’re nice for tackling Pests or base invasions, however that is about it.

When your prepared, return to the Hydroplant. Soar into the water on the earliest alternative and swim towards the tower that holds the Voussoir portal.

Use the Rope Plant to climb again as much as the higher deck. You will see a portal within the heart of the higher deck; drop into it to enter Voussoir.

Go to the Voussoir Walkthrough to Proceed

Coming back from Voussoir | Reactivate the Spillway Programs

Return again to your base after exiting Voussoir and deposit your loot.

Earlier than you do the rest, you must craft a Freezer.

The Freezer is a large improve from the Fridge. It has much less capability that the Fridge, but it surely has the good thing about completely stopping meals spoilage so long as its powered.

It takes 6 Yeti Fur to construct a Freezer, so that you solely have sufficient for one proper now. Killing the Yeti a second time, nevertheless, offers you an extra 10 Yeti Fur, permitting you to make a complete of three Freezers.

Making a number of Freezers tremendously reduces meals wastage; I strongly advocate that you simply make this a precedence. You’ll maintain onto gadgets (comparable to alien meat) perpetually till you want it moderately than having to exit to gather it when the time comes.

I also needs to point out that the Freezer is pretty energy hungry. You will need to join a minimal of 4 Batteries (Makeshift) in a line for every freezer, in any other case it would run out of energy earlier than daytime comes.

Because of the Photon Receptor, you now have what you might want to make a Keypad (Tier 5) if you have not already. Since we now have this, we will open up a few Portal Worlds.

Be sure that to maintain your chilly climate gear from Voussoir on as we’ll be headed to a different world that is fairly chilly. You will additionally need to craft a few Soar Pads; if you have no Gaseous Nests, you may fairly persistently discover them in The Mycofields. Lastly, you need to be completely sure that you’ve the Dangling Gravity Dice Trinket outfitted.

The primary Portal World is The World within the Mirror. Take the tram elevator within the Containment Blocks as much as the highest ground.

Head towards the locked door reverse The Mycofields.

Open the door and head inside.

There is not a lot right here aside from some laptop consoles, a few Workplace Chairs, and a glowing mirror. Stroll into the mirror and you will find your self in a wierd hallway in The World within the Mirror. Climb up the ladder and you will find your self in a large open plain.

The World within the Mirror is a superb place for constructing. It loops round infinitely; strolling in a single route will merely take you again to the middle. There’s a single supply of energy within the type of the GATE generator on the yellow tile pad within the center.

When that is executed, make your means towards the Furnishings Retailer within the Cascade Laboratories. Make a left on the door to IS-0083 and open it along with your Keypad Hacker. As soon as inside, work together with the arcade machine to enter the House Queen Portal World.

Go to the House Queen Walkthrough to Proceed

Coming back from House Queen | Reactivate the Spillway Programs

We have not had trigger to go to this space across the Furnishings Retailer a lot (except you determined to go to the Furnishings Retailer by yourself), so let’s choose up one thing neat whereas we’re within the neighborhood.

Exit into the principle corridor to the suitable of the House Queen door and cross the bridge you constructed earlier. Stroll into the white tubes the place you met Dr. Cahn.

Since Dr. Cahn left this cell, you may head inside. Inside, you may discover the Unassuming Bell, the TV: Standby, and another furnishings gadgets. Return to your base and offload your loot.

Now we will must make some issues. First, we’ll begin with crafting a Hyper-Dense Neural Chip. This merchandise has some necessary makes use of; it may be used to make a useful Trinket and a brand new Backpack that we’ll unlock shortly.

Most significantly, nevertheless, is its utilization in Containment Unit: 91.

Containment Unit: 91 can be utilized to completely comprise the Leyak so long as you retain it powered and full of Greyebs.

It is tremendous helpful and it saves you a variety of bother; use it appropriately and the Leyak won’t ever trouble you once more. (Take a look at our information on how one can kill the Leyak to study extra.)

Subsequent, you may must craft an merchandise wanted to finish one in all your goals.

Craft a Neutrino Emitter. The Neutrino Emitter is used to finish one of many two remaining goals (Block Interference on Transmission Tower). You can even use it to nullify the radiation from any radioactive storage in your base.

If in case you have the sources to make one other one, you must achieve this — it may be used to make the R.A.I.N. Bathe. The R.A.I.N. Bathe is a brand new merchandise launched in model 1.0. It does not simply clear you off — it additionally removes all radiation from you for the price of it staying powered and utilizing a little bit of water. It is an extremely helpful merchandise that is important for any base; it means that you can save your radiation meds to be used within the subject.

I additionally advocate inserting the Battery (Makeshift) on the bottom and hooking it as much as a free energy plug someplace.

You may retailer a charged battery in your stock. One of many goals would require you to energy a Neutrino Emitter, and having a charged battery will allow you to do that for those who’re caught out within the Hydroplant at night time.

Should you do not need to mess with wires, this is a tip: Batteries (Makeshift) may be charged on a Charging Station.

You will additionally need to craft an Antethermite and convey it with you. You should utilize it as quickly as you enter the following sector to get entry to some loot chests.

The subsequent space has a Tram, too, and you may need to make a Tram Station Key to open up entry to it.

There’s only one thing more to make: craft a Laser Emitter. If you have not messed with lasers, you may get an opportunity to find out how they work quickly.

Now that you simply’re all equipped, it is time to make your means again to the Hydroplant. Since you’ve a Keypad Hacker (Tier 5), it is a good suggestion to open up the locked doorways you’ve got encountered alongside the way in which to avoid wasting your self from having to go across the great distance sooner or later.

Stroll towards the target “Block Interference on Transmission Tower.” Your subsequent location is that this constructing:

There is a small guard tower to the left.

Go as much as the second ground of this tower and kill the Lab Rat up there. Then, open the gate along with your Keypad Hacker (Tier 5).

When the safety gate is open, make your strategy to the rear of the constructing. Be careful for aliens within the courtyard!

You will discover a door marked “Upkeep Entry” towards the again of this constructing. Undergo this door. You will see a Protection Robotic on the opposite aspect of the door, so be able to struggle it.

You will discover a valve towards the entrance of the constructing. Flip it on to unlock a teleporter of kinds utilizing the water pipes.

That is the primary of many water pipes which you could unlock within the GATE Facility that function an alternate strategy to transfer round.

There are a number of methods to get round this constructing, so I will not go into any particular one. Make your means as much as the upper floor and search the world for a yellow door marked “Programs” and Lockers.” There’s an elevator on this room. Go up it.

On the prime of the elevator, flip left and you may see a balcony with a purple ladder.

Climb up the ladder and you will be subsequent to your goal.

Chain the Battery (Makeshift), Twine Splitter, Laser Emitter, and Neutrino Emitter in a line, with the Neutrino Emitter positioned inside the warning traces across the transmission tower on the roof.

This can full the target “Block Interference on Transmission Tower.”

Make your means again to the Waterfall Residences the place you bought the crafting recipe for the Diving Swimsuit.

Go into the doorway and switch proper. Flip proper once more on the signal that claims “Train” and go downstairs.

Previous the tennis court docket, you may see a yellow door with a keypad and an indication above it that claims “Mainframe.” Open this door.

You will discover a pc terminal in right here. Activate it to finish the ultimate goal “Reboot Spillway Laptop.” You can even discover a Dr. Manse hologram on this room.

Open the Spillway

We’ll get to opening the Spillway momentarily, however we now have another factor to seize on this space. Return right down to the tennis court docket under the Mainframe room and you may see a vent.

Crawl via the vent. Be able to struggle; there are a number of Electro-Pests and different aliens on the finish of the vent.

Clear the room of enemies after exiting the vent. Once you’re protected, go searching and you may see a hologram.

Work together with the hologram and you may unlock the crafting recipe for the Voidpack, the following tier of backpack.

We’re virtually able to open up the Spillway, however we will make a fast detour. Return house and craft not less than one Hyper-Dense Neural Chip and one Neutrino Emitter. Should you can craft an extra Hyper-Dense Impartial Chip, you must use the second to make a Voidpack.

The Voidpack is your greatest backpack possibility but when it comes to cupboard space. Crafting the Voidpack additionally unlocks the Void Chest.

The Void Chest is akin to the Ender Chest in Minecraft — there’s shared storage throughout each occasion of the Void Chest. It is considerably costly to craft, but it surely might be helpful in sure situations.

Then, head again to the Hydroplant. Make your means right down to the submarine bay and head towards the again. Go searching and you will find a number of crates stacked up in opposition to a wall.

Break up the crates and accumulate the loot. Then, take away the grates blocking the vent and head inside. You will discover a fan within the ground.

This results in the Robotics Space, but it surely additionally results in the Dunkeltaler Forest portal world. You will want a Neutrino Emitter to be able to open the portal discovered on the opposite aspect of this underwater shaft.

Place the Neutrino Emitter within the slot, and a purple portal will open proper subsequent to it. Hop in to go to Dunkeltaler Forest.

Go to the Dunkeltaler Forest Walkthrough to Proceed

Coming back from Dunkeltaler Forest | Open the Spillway

Now that you’ve got returned from Dunkeltaler Forest, you may select to dump your loot or press ahead.

Dive down via three stopped followers, then search for and you may see a gap within the ceiling.

Swim up into this space.

You will discover a vent shaft; crawl via it and you may exit at one other level with a drop down into water. You’ll possible encounter not less than one Zombie right here.

Drop down into this pool and head towards a yellow crane.

Once you attain the crane, flip round and you may see an open door subsequent to an inactive Protection Robotic.

Head via this passage and observe the indicators to Robotics.

As you progress ahead, you may see a round tunnel. Head into it. Once you attain the top of the tunnel, swim up and you will be in a room with a pc that has a mind connected to it.

Converse with “Kylie.” After ending your dialog, you may interface a Hyper-Dense Neural Chip into the machine.

Finishing this course of provides you the “Kylie” Trinket which will increase your expertise acquire. It is a helpful Trinket to have and it is simple to overlook for those who do not discover completely.

After getting Kylie, exit again the way in which you got here. Undergo the tunnel and observe the again path to the submarine bay. Alternatively, you may teleport out of right here and save your self the difficulty of navigating this underwater space.

Head again to the constructing the place you positioned the Neutrino Emitter.

Make your means again as much as the world the place you positioned the Neutrino Emitter for an earlier goal.

You will discover a button which you could push to finish your goal. Push the button and you will have a brand new goal: “Attain the Reactors.”

Make your means again to the submarine bay. You will discover an open water pipe with the target marker above it.

Soar into the water pipe that is labeled “Spillway C.”

This can take you deeper underground. You will discover the Sister of the Unlost close by; converse together with her. Then, head into the opposite water pipe with crops on both aspect.