Underground Expressway

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#B4: The Octo Shower
Octo Canyon missions
#23: The Octogalaxy

Underground Expressway
˜ Octobrush with Danger ˜
Hm2 m22.jpg
Number 22
Area 5
Sheldon's Request S2 Weapon Main Herobrush Replica.png Herobrush
Items 1 Scroll,1 Sardinium, 5 Armor, 1 Curling Bomb Launcher, 1 Ink Storm, 2 Splashdown
Music Buoyant Boogie
amiibo challenges

Underground Expressway is the twenty-second mission of Splatoon 2's single player mode Octo Canyon. It is the first and only mission to use the Herobrush.

Octo Canyon

Take one of the blue saucers, and board the invisible platform marked by poles. There are more invisible platforms ahead, in order: two small moving platforms, a stable platform with a checkpoint, and four larger moving platform circling a larger stable platform. Upon discovering the platform with a checkpoint and one of the four large moving platforms, sprinklers on poles emerge from the water, and upon discovering the large stable platform a ride rail appears to take the player back to the platform marked with poles. Ink towards the direction opposite to the ride rail to reveal the extended part of the platform. Be wary that the four large moving platforms can obstruct and push the player off the stable one. The kettle is behind the moving platforms.



Sunken Scroll

S2 Sunken Scroll 22.png
Hey, squidkids! It's me Callie! ♡ It's been so long since I've written a proper blog post! <:三 <:三 Being on my own like this, I've got time to think, but sometimes I think too much! (>_<;) But I'm really psyched for filming today! Stay fresh! (`ω´)

Location: After the last area with the Octocommanders, drop ink over the edge of the path to the Zapfish to reveal an invisible platform. The Sunken Scroll will be there. To get back reveal the rest of the invisible path and jump on top of a Squee-G.

Scroll location


Location: Defeat the second Tentakook and take the key. Climb the wall and defeat the Octotrooper to have safe access to a locked box. Open the box to get the Sardinium.

Sardinium location


Underground Expressway has 5 pieces of armor to collect.

Armor 1 Location:

Armor 2 Location:

Armor 3 Location:

Armor 4 Location:

Armor 5 Location:

Special Weapon

Curling Bomb Launcher Location:

Ink Storm Location:

Splashdown 1 Location:

Splashdown 2 Location:

Enemies and Mechanics

First Introduced

Previously Introduced


S2 Icon Marie.png
Marie's Quotes

Hold Button1 ZR.png to ink as you go!
You don't have unlimited ink, so watch the tank on your back.
The path ahead is invisible. Just cover it with ink and you'll be fine.
Those guys with shields are no big deal if you can flank 'em!
Lookin' good.
That was totally brill!
More invisible paths. Take it slow.
I don't think I'll ever get used to this...
It dropped a key.
What in the world are they up to?
I feel a big fight coming on...
Nice fight. Get to that launchpad.
When brute force won't work, try using a little finesse.
Ready to get up close and personal with a couple of Octocommanders?
Lead those industrial Squee-Gs with ink and bombs!
You did it!

S2 Icon Sheldon.png
Sheldon's Request Quotes

OK, take this with you. It'll help me gather some practical battle data.
If you love getting up close and personal, the Herobrush is the weapon for you.
Hold Button1 ZR.png to ink the ground as you run, or spam the button to slash repeatedly!
You can close in on enemies really quickly, and then splat 'em to bits like a ninja!

Sheldon's Level Quotes

With the Herobrush, it's all about mashing Button1 ZR.png until your enemy explodes!
Ah, yes! Splashdown! Use it! UUUUUUSE IT!
Oh! That's a Curling-Bomb Launcher! Let 'em have it!
IT'S THE SPLASHDOWN! Press Button1 RS.png near a bunch of enemies to splat 'em all!


Names in other languages

S2 Lil Judd Pointer.png To do:

Add/complete French (NoA and NoE) and Italian translations edit

Language Name Meaning
FlagJapan.svg Japanese 地下のトウメイ高速道路 #
塗ってホクサイ 気分は天才
Chika no Tōmei Kōsoku Dōro #
Nutte Hokusai Kibun wa Tensai
Underground Tōmei (invisible) Expressway:
Painting by Octobrush in a Genius Mood
FlagNetherlands.svg Dutch Waar inkt is, is een weg Where there's ink, there's a way[note 1]
FlagFrance.svg French (NOE) - Grand huit souterrain -
L'Épinceau périlleux
FlagGermany.svg German Pfade ins Ungewisse Paths into the unknown
FlagItaly.svg Italian A tutta tinta sulle strade invisibili!
FlagRussia.svg Russian Осьморянские горки
«Кальмар на грани»
Os'moryanskiye gorki
«Kal'mar na grani»
Octarian slides
"Squid on the verge"
FlagMexico.svg Spanish (NOA) Autopista subterránea
˜Peligro invisible˜
Underground expressway
˜Invisible danger˜
FlagSpain.svg Spanish (NOE) Autopista al peligro Highway to danger

Translation notes

  1. From the phrase "where there's a will, there's a way"