Sanitizarium

The Octo Shower is the fourth boss mission in Splatoon 2's single-player mode, Octo Canyon.

Walkthrough
The Octo Shower itself is carried by a group of Octocopters. The player must splat the Octocopters so the shower falls down and exposes its tentacle. The octocopters are to high to be shot at ground level, you must climb up the various blocks in the arena. The boss will try to keep its distance, and its movements become unpredictable once one Octocopter remains.

First Phase

 * The boss is carried by three Octocopters
 * The boss pulls out a weapon similar to the Octosniper weapon. The shower head uses a tracking laser that shows where he will fire. He will only fire once with this weapon before using a different attack.
 * The boss quickly flies across the arena while shooting down a stream of ink. The shower head flies backward before he does this.
 * The boss fires missiles that chase the player. The player can shoot these down.

Second Phase

 * The boss is carried by four Octocopters
 * The boss uses a hand crank cannon that behaves like the Heavy Splatling
 * The Octo Showers still uses all its attacks from phase 1.

Third Phase

 * The boss is carried by four, faster moving Octocopters. This set of Octocopters like to dodge the players shots at the last second.
 * He uses everything from phase 1 and 2, but now he uses a Sting Ray. The shower head can move the laser much more easily than inklings.