i'm also in the "stuck on level 3" club, haha. if the passages were just a tiiiiny bit wider, i think it would be a good balance of difficult vs actually doable. or if it was maybe a later level (though i'm not sure how many levels there are, total).
i liked what i could get through, though! could use a little more juice for sure --sounds and music would be great, and i would have loved the ability to turn on an auto-respawn (after a short death animation) instead of having to press space every time i died. the art style is minimalist, but very communicative. good work!