Really cool, I enjoyed that!
I like the sound of character, and weird legend behind slime and bacon and boxes, so funny.
It feels sooo hard at first, and I found "hard" mode easier because character moves faster, at a pace that's meaningful to everything else. After some time though, I managed to enjoy classic mode as well.
It felt to me that simultaneous left-right movement for expanding or collapsing both sides would fit, I instinctively tried it and it doesn't work. Could be nice.
Congrats on submission!