Hey ^densch, I uploaded a new build that will save future players from getting stuck where you did, but unfortunately it's not going to get you unstuck. I posted a devlog that includes instructions on how to edit your save file to get you out of this terrible trap I made. Please let me know if you have any trouble getting it to work.
for the record, I started at the "Waves in the air H9" area, in the middle of that screen there is a place where you can kind of get thorugh if you jsut jump from high enough.some momentum tricker makes it just barely possible to get down there without double jump.
I basically jsut followed the only possible path until I was basically at the bottom.
close to the golden key and right from there until sooner or later the mole village.
how I got to the above mentioned area?
from the water areasH8,G8,G9 etc.
How I got up to that cliff in H8?
Cant really say, likely via a teleport door.