Underground Expressway

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
"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´)"

- Sunken Scrollgreen

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.

Sardinium
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.

Armor
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:

Quotes
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S2 Icon Marie.png Mariegreen green
"Hold 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."

"Nice."

"That was totally brill!"

"orange!"

"More invisible paths. Take it slow."

"I don't think I'll ever get used to this..."

"It dropped a."

"What in the world are they up to?"

"I feel a big fight coming on..."

"Nice fight. Get to that."

"When brute force won't work, try using a little finesse."

"YES."

"Ready to get up close and personal with a couple of Octocommanders?"

"orange those industrial Squee-Gs with orange!"

"You did it!"

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Sheldon Icon.png Sheldongreen green
"OK, take this with you. It'll help me gather some practical battle data."

"If you love getting up close and personal, the orange is the weapon for you."

"Hold 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!"

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Sheldongreen green
"With the Herobrush, it's all about mashing until your enemy explodes!"

"Ah, yes! ! Use it! UUUUUUSE IT!"

"Oh! That's a orange! Let 'em have it!"

"IT'S THE orange! Press near a bunch of enemies to splat 'em all!"

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