It took a while to figure out what to do with the boxes. The problem in finding it out was that the boxes didn't stay solid if I held the click, I had to repeatedly click the box I was on if I wanted to not fall. I could not jump off of the boxes as they were not solid half the time, I feel as though the idea was to be able to drag your mouse over them seeing the level after the mechanic is introduced. The only current way to get through this currently is with an autoclicker.