What an incredibly polished game! It's super impressive that you made all this in a month. The controls work really well, the visuals are incredible, the music & sound design is great.
If there is one criticism I have, it's that the box scaling is like... the one mechanic that makes this not just a standard action platformer? And there are some cool things with that, like damaging enemies with growing boxes, but on the whole being able to move platforms to a place doesn't feel like the most unique mechanic to base your entire game around?
On the whole though, this was really fun, and incredibly impressive!