I like the aesthetics of the game. It reminds me of Antichabber (black and white palette and calm music) but it's fairly different.
There was a bit of collision issues (I managed to almost get stuck at the rocket in the beginning). Also, the second part after getting the cube thing was really hard, I really struggled to get to another platform. As mentioned by other reviewers, vertical camera movement would be good to have too as well as some kind of shadows or something to give players a sense of scale and distance (maybe scaling your textures properly could help).
Nicely done!