this is a cute idea! some thoughts:
- verticality should be used here. right now the assortment of objects is very flat which makes the gameplay samey.
- the player character needs some sort of drop shadow directly beneath them to indicate where they are on the XY plane. it's hard to tell otherwise
- i like the idea of unlocking more level parts, but you should take this concept a lot further. i think this is the key to making the game stand out
best of luck with development!