I found the process of figuring out which blocks I was allowed to push to be quite enjoyable. This is probably my favorite PP1 level so far, might even inspire me to try making something similar.
Fantastic use of forward thinking analysis here. So much clutter and blockage in the way that it's difficult to find a route to not leave everything completely blocked up. Very nice!
Magnificent! For a level of this size, it's extremely difficult to get to the exit at all. Almost feels like playing a tricky PP2 block manipulation puzzle, and yet it's PP1 and fairly small to boot.