Very well made. The polish really goes a long way, and although there aren't many levels, it makes all the levels feel fun and fair. The only level I disliked was "Save every crate from the crusher", which I think could've been fixed with just two less crates than there currently are.
Visually it's very nice to look at, although I would've liked a little more impact on the crushers, just to make them a bit more intimidating. But that is a very small critique.
It definitely needs some form of background music, though. The lack of music made it feel empty, and I think some kind of light song with some warehouse ambiance in the back would've fleshed the environment out quite a bit.
Thank you for creating!