Here is the full list of all 43 Kandagawa Jet Girls achievements.
Purchase a decal at the Shop.
Purchase an accessory at the Shop.
Purchase a hairstyle at the Shop.
Purchase a skin at the Shop.
Purchase an effect at the Shop.
Obtain a B rank or higher in the "Aerials" extracurricular activity.
Obtain a B rank or higher in the "Treadmill Run" extracurricular activity.
Purchase a costume at the Shop.
Purchase a machine part at the Shop.
Customize a jet machine in the Garage.
Equip a jet machine part.
Obtain a B rank or higher in the "Mopping" extracurricular activity.
Obtain a B rank or higher in the "Jet Machine Cleaning" extracurricular activity.
Execute 10 tricks while racing.
Customize a character in the Dressing Room.
Clear the first chapter of the story for Asakusa Girls' Municipal High School.
Clear all tutorials.
Obtain all achievements.
Clear the story for Asakusa Girls' Municipal High School.
Clear the story for Musashino Girls' Private High School.
Clear the story for CS Production School.
Clear the story for California Coast High School.
Clear the story for Takadanobaba Girls' Academy.
Clear the story for Hijiribashi University High School.
Clear the story for Kagurazaka Technical High School.
Clear "Kandagawa Jet Girls: Riding Toward a Shining Future."
Clear 64 missions in Story Mode.
Clear 128 missions in Story Mode.
Clear 8 missions with an "SSS" rank in Story Mode.
Obtain 81,000 points in one round of an extracurricular activity.
Equip all 5 "High Output Battery" parts on a single jet machine.
Equip all 5 "Acceleration Filter" parts on a single jet machine.
Equip all 5 "Handling Hydraulic Cylinder" parts on a single jet machine.
Update ghost data for Akihabara: Electric City in Time Attack Mode.
Update ghost data for Ochanomizu: Hijiribashi in Time Attack Mode.
Update ghost data for Kandagawa: Asakusabashi in Time Attack Mode.
Update ghost data for Neo Nihonbashi in Time Attack Mode.
Update ghost data for Kichijōji: Inokashira Park in Time Attack Mode.
Update ghost data for Ichigaya Water Gates in Time Attack Mode.
Update ghost data for Tokyo Resort City in Time Attack Mode.
Update ghost data for Kandagawa Underground in Time Attack Mode.
Perform 50 Special Techniques while racing.
Execute a maxed-out drift boost while racing.