Criticism -
When inside the toxic clouds, it is a bit unobvious why you shouldn't be in the clouds, so maybe some flavor text explaining why would help.
Support -
The art is amazing and fits so well. I loved the small details added in with the floating objects that you can move around. The music was excellent and gave off that spacey vibe. The level design was very nice and I like that you added directional arrows. All around, great game with lots of good polish!