Unique Idea!
I like that you have to move two things at the same time to survive. I think it was fun and the graphics are cute. Also it felt very polished first of all because of these graphics and secondly you had time to add these power-ups which gives the game much more life.
The only thing I would adjust are the hit-boxes in general because they are maybe a little to small.
So great work and keep it up :D