That was quite fun. I loved the smooth camera movements. That really made it feel polished. The shrinking in midair as a mechanic was also pretty cool.
The only part I had issues with was dashing. This may have been due to an issue where if you were holding a directional button, sometimes the jump didn't trigger.
Also, I was unsure of if there was a level end. I found the "end of the world" sign, but thought there'd be some kind of "Yay you won" or something. Maybe there is, but I have been playing for around 20 minutes, but couldn't find it.
Still a fun game overall. Great work!
PS: As a sound designer, I must say, that "pop" sound was extremely satisfying.