Here is the full list of all 19 River City Girls Zero achievements.
Ride the Roller Coaster.
Kyoko has joined the team.
KO Ryuta.
Misako has joined the team.
KO Daiki.
Escaped prison.
KO Gouji.
KO Shinji at the Amusement Park.
Reach Pier 13.
KO Shinji at the Warehouse.
Reach Roppongi.
KO Kinji.
Reach Shinjuku.
KO Misuzu in the Pachinko Parlor.
Survive a drop off a rope bridge.
KO Misuzu in Izu.
KO Ken.
KO Sabu.
Complete the game.