List of unarmed missions

From Inkipedia, the Splatoon wiki

These missions in the Octo Expansion and Return of the Mammalians require the player to enter the mission without any main, sub, or special weapon. Typically, these missions utilize a mechanic that does not require any equipped weapons (e.g. an Ink Cannon in I03E01 No Whammy Station), or offer challenges in which a weapon would defeat the point of the challenge (e.g. C04 Move It Move It Station). Some missions that begin unarmed allow the player to collect canned weapons or canned specials over the course of the mission.

Unarmed missions are marked with an icon () on the selection screen of the equipper.

List of unarmed stations

Octo Expansion

Unarmed Stations Reasons

A? Abandoned Station
Introductory station. A weapon is granted for one area but returned upon leave.

A00 Central Station
Hub station.

B07 Fly 8-Ball Station
Pressure switches used.

D01B15 Ink from Above Station
Tactical mission. Canned weapons are collected over the course of the mission.

C04 Move It Move It Station
Tactical evasion mission.

I03E01 No Whammy Station
Ink Cannon used.

E06 Swass 8-Ball Station
Ink Cannon used.

Escape 01 Coccyx Phase
Stealth mission.

Escape 02 Villi Phase
Tactical mission. Canned weapons are collected over the course of the mission.

Return of the Mammalians

Unarmed kettle Reason

0110 Deadly Dance Hall—Jump, Jump!
Tactical dodging mission.

0612 Enter the Stamp Gauntlet
Uses unlimited canned Ultra Stamps. Choosing being unarmed is optional for this mission, but yields more Power Eggs.