Spill Village - 99% translated
Celemo's tutorials - 100% translated
Rock Island - 70%
Shipwreck - 10 %
Ouch Concert Hall - 5%
Gimmick Palace - 99%
Ending sequence - 99%
Most gimmicks have been translated, except the ones I haven't got.
All the cool move names and descriptions have been translated.
All of this is possible thanks to [Unknown]'s tools and Clyde Madelin's Youtube live translation playthrough! I use that as my main translation source, and use Google to fill in the blanks, or come up with my own interpretation somewhere in between.
All of Celemo's tutorials are translated now, which will help new players.