I totally agree with point 2. The thing is, I was going to add more mechanics but I didn't have time to, and in a rushed level design decision I had to put exploits as solutions to puzzles. For that first cave level in particular, while you can't jump with your backpack on, you can still fly through the air after jumping, the key was to jump, and while in the air grab your backpack and get to the next platform. This mechanic was not explained at all and I honestly wish that I hadn't put that level in there, especially considering that the level after that is reputably easier, and the level after that uses the same mechanic but in an easier scenario. If I were to do it again, I would take that level out completely and replace it. The thing with it is that, because of how the timing is, even though I know the solution it was hard for me to do. I honestly regretted that level the second I put it in there.