Hey, thanks for the comment! You are right with the usability stuff, I didnt face that but it sucks you had to hide it!
Regarding the second level, there is a box you can jump on in the dark part of the level, near to the narrator text (a bit above and to the right). You can jump on that and continue, would love to hear your opinion on the "full" game. I didnt have time to send it to anyone to playtest, so yea my hint with the snake box seems not to be very good :D