I really loved the Gameboy aesthetic, even on the little title card on itch. The whole deep green style was great, and the lil' robots were extremely cute. Did you make the music? The ticking and the general style felt so reminiscent of Chrono Trigger that I almost looked it up to see if it was a track I forgot about.
I had a real rough time with the second or third level, just could not figure it out. I didn't spot the button I was supposed to be pressing for quite a while, and once I did I just could not for the life of me figure out how to put the box on it. I think sometimes it really is best to go slow and baby players through stuff by feeding them one mechanic at a time. In this case I was bamboozled by running into picking up blocks, dodging two kinds of enemies, pushing buttons and navigating a pit all at once.