I couldn't get past the swinging obstacles either. I tried just sitting there after possessing the worm, thinking the hitbox needed time to update and that seemed to work? Until I got to the other end and forgot how the walljumps work and fell to my death again. Boooo.
A really cool premise and super clean pixel art. I would love to see this more developed! And music, too! Good job on finishing this. Your first jam is a big step and I hope you do more!