Thank you for playing, and for the great feedback.
I didn't consider testing with a controller, and do need to remember that for future games.
I will admit that some of the mechanics could have had a better introduction. For the level you were stuck on, the intended solution uses the fact that you can push a barrel without being in contact with it.
If you want to continue playing, there is a "Skip Level" feature in the settings menu.
Thanks again :)