I got stuck in a pit with a breakable wall but I hadn't found the projectile yet, had to start the whole thing over.
Do you remember where exactly said pit was? I'm fairly positive that there are no softlock spots in the game - you should be able to get back up from any room as long as you use the High Jump.
I should've posted a screenshot right away instead of being vague about it.
Ah yeah, that. Thanks for reporting, I'll fix it ASAP.
