I was so close last night! I was doing 10-4 pretty much how you were supposed to, but I just needed to speed up on my Snakey-pushing. 10-5 (the final level) was way, way easier than I expected, and I did it on my second go.
Overall, it’s a great game. It looks crap, and yes, is just a crate pushing game at heart, but it’s well executed and the difficulty curve is pitched perfectly, so it’s well worth a punt. Ahaha!