Cabin boy
Not unlocked yetComplete a level in Normal mode
Question of time
Not unlocked yetComplete a level in Time Trial mode
All star
Not unlocked yetObtain 3 stars in a level
Fresh fish
Not unlocked yetKill an enemy
Empowered
Not unlocked yetObtain a powerup
Slippery
Not unlocked yetFinish a level losing no lives
Shallow waters master
Not unlocked yetComplete the first chapter: Shallow waters
Reef ahead master
Not unlocked yetComplete the second chapter: Reef ahead
Underwater volcano master
Not unlocked yetComplete the third chapter: Underwater volcano
Arctic fire master
Not unlocked yetComplete the fourth chapter: Arctic fire
Like this big
Not unlocked yetComplete all chapters in Normal mode
Just about time
Not unlocked yetComplete all chapters in Time Trial mode
Underwater legend
Not unlocked yetComplete Normal mode with all the stars in all the levels
Lord of the seas
Not unlocked yetComplete Time Trial mode with all the stars in all the levels
Catch-and-release
Not unlocked yetComplete a level with 5 enemies alive
Right on time
Not unlocked yetComplete a Time Trial level with only 1 second left
Unfrozen
Not unlocked yetKill an enemy while he's inside an ice block
Shellfish lover
Not unlocked yetFinish a level with 2 crabs still alive