Splatoon 2/Enter the Octohurler

The Kettle for this mission is on a tower to the left of Suction-Cup Lookout. You get to it by jumping a gap to the left of the ramp at the front of the area. you will see a sponge at the platform you land on after jumping, leading to ground Grates that lead you around the tower, with another sponge at the end of the grates, leading to the top of the tower where you will find the kettle.

Beginning Area
Take the Launchpad to head to the first checkpoint. There are a total of five power eggs to collect.

Checkpoint 1
There are several Roloniums to use to defeat the Octotrooper, destroy the crates, or place ink on the wall to climb it. There is also an option to defeat the Octotrooper naturally, break the crates and shoot at the wall. Another set of this checkpoint has more Rolonium, two of the Rolonium can be used only once while the one on the left can be used many times.

Checkpoint 2
Use the Geyser or climb on the wall to continue this checkpoint. Three Octopods will run toward Agent 4. Take the Octopods out and climb up the wall. There will be more Octopods once Agent 4 climbs up the two sets of walls—there are Rolonium placed to defeat them easily.

Checkpoint 3
Since the wall can't place ink, use the gusher to get up the wall. Agent 4 will now be put in a fight with two Octotroopers and an Octobomber. Using the Rolonium on the small crates will deliver the Octotroopers to the ground and can be taken down with the Rolonium, or shoot at them. The Octotrooper on the left is on a small tower or small crates while the Octotrooper on the right has a taller tower.

Once the Octobomber and both of the Octotroopers are defeated, a launchpad will appear.

Checkpoint 4
This checkpoint introduces Agent 4 to the Octohurler as it rolls the Rolonium on a slab. Shoot the Rolonium and ensure it aims at the Octohurler and the rolonium will defeat the Octohurler.

Checkpoint 5
Take the gusher once again and climb on the wall. There are a total of five Octohurlers on Spreaders. Take the Sting Ray and use them to spray it at the Octohurlers, but there is an Octotrooper on a tower of small crates, so make sure you defeat the Octotrooper so it doesn't aim for you while using the Sting Ray. There is another tower of crates on the left, and the top crate holds a piece of armor.

It is optional to defeat all of the Octohurlers so Agent 4 can use the launchpad anytime.

Checkpoint 6
Jump the small gap and there is more Rolonium that can be used to destroy any of the Octopods that are spawning.

The same process happens later in this checkpoint, but Agent 4 now has to deal with three Octotroopers and an Octopod. There is the same amount of Rolonium to use to try to defeat the Octotroopers and the Octopod.

Final Checkpoint
Jump another small gap and break the small crate that holds an armor piece. Similar to Checkpoint 3, only this time there is only one Octotrooper and no crate tower with no Rolonium to use. Once you defeat them, there is another Octohurler on a Spreader that moves side-to-side. Once the Octohurler is defeated, a launchpad will appear. Take the launchpad and grab the Zapfish.