Hey thanks for playing and your feedback!
I'll look into the bugged out chapter select asap.
It's a hard game, but I've played a lot of it so it's difficult for me to gauge the difficulty. I think I'll put another health pickup in the leadup to the ball pit to help, If you're able to get out of the pit and progress a bit further there's a morphine that will clear all your debuffs and heal you fully.