Splatoon 2/Octoling Assault

On the right side of the map, go to the propeller platform, power it, board the platform with the crate and climb up the wall ahead. To the left is a sprinkler sticking on an overhead arc. Destroy it, jump to the platform at the other side of the arc, and ink the kettle at the end of the corridor.

The Mini Zapfish are ordered in terms of accessibility from spawn and other Mini Zapfish.

Mini Zapfish 1
To the left of spawn is the first Mini Zapfish. Drop off from spawn and go to the foam pit on the left. An enemy Octoling will superjump to it as the player approaches.

Mini Zapfish 2
To the right of spawn is the second Mini Zapfish. Head to the Rolonium in front of the spawn and take a left turn to the Zapfish. Alternatively drop down twice from Armor 1.

Mini Zapfish 3
To the left of the center is the third Mini Zapfish. Drop down from Mini Zapfish 1, break the Toxic Mist and continue on the track. An Octoling will superjump to the second Toxic Mist near the Mini Zapfish.

Mini Zapfish 4
To the right of the center is the fourth Mini Zapfish. Drop down from Mini Zapfish 2 onto the track and continue along it. An Octoling will superjump to in front of the block with the Mini Zapfish. Defeat it, climb up the block and grab the Mini Zapfish.

Mini Zapfish 5
The fifth Mini Zapfish is in the center of the map. There are also two Toxic Mists and an Octoling superjumping nearby.

Mini Zapfish 6
To the far left corner of the track. From Mini Zapfish 3, head along the track and defeat the Octoling superjumping to near the Inkfurler ahead. Then use the Inkfurler to get up, defeat the Octoling guarding Mini Zapfish 6 and grab it.

Mini Zapfish 7
To the far right corner of the track. From Mini Zapfish 4, head along the track and grab the Mini Zapfish in the corner. An Octoling will superjump to nearby upon collecting the Mini Zapfish.

Mini Zapfish 8
To the left of the opponent spawn (right in opponent view). Head to the opponent spawn by the Gusher from Mini Zapfish 6, or the Inkfurler from Mini Zapfish 7. Defeat the Elite Octoling guarding the spawn. Take a left turn up the ramp and defeat another Elite Octoling there. The Mini Zapfish is right around the corner along with a Toxic Mist.