Here is the full list of all 29 Umihara Kawase BaZooKa! achievements.
Start Challenge Mode with Cotton (Fresh!).
Start Challenge Mode with Marin.
Start Challenge Mode with Luffee.
Start Challenge Mode with Uzuki Senba.
Start Challenge Mode with Cotton (Origin).
Start Challenge Mode with Piaa.
In Challenge Mode, deal damage with a Double Jump.
In Challenge Mode, fire a Bazooka for the first time.
Start Challenge Mode with Umihara Kawase.
Obtain all trophies of Umihara Kawase BaZooKa!
World 1 Boss defeated.
World 2 Boss defeated.
World 3 Boss defeated.
World 4 Boss defeated.
Start Challenge Mode with Silvy.
Start Challenge Mode with Gin.
Start Challenge Mode with Queen.
Start Challenge Mode with Appli ke Pumpkin.
Start Challenge Mode with Emiko.
Start Challenge Mode with Nokko.
Start Challenge Mode with Daichi.
Start Challenge Mode with Tenko.
Start Challenge Mode with Nana.
Start Challenge Mode with Lucina.
Start Challenge Mode with Suzuna.
Start Challenge Mode with Dozle.
Start Challenge Mode with Ariel Sinclair.
Start Challenge Mode with Sonic Cat.
Start Challenge Mode with Pochi.