The mouse movement platforming controls were meant to mirror waving your phone for cell service but I don't think that came across cleanly. Keeping the movement to mouse only also kept tutorials simpler but intuitive did not equal precise or comfortable for a lot of players.
I kept the mouse controls because I think it's evocative and an interesting lesson but if you (or anyone!) would like to try the game with Keyboard controls there's a secret room in the bottom-right-most corner of the map that unlocks the alternate control scheme.
Thanks for the kind words and for asking! Hopefully this is at least illuminating for other game devs!