The idea & some of the implementation is there - I like the general cat-chasing premiss and I think the 2D/3D flipping was a really cool thing to add in. That being said I did find myself quite confused/disorientated by the sudden snapping up & down, plus the general feel of movement was rather slidey. I thought the lights that can be used as points to figure out where you've been is good, albiet not fully realised given that the levels tended to be small.
The fact that you chose to do a 2D/3D hybrid shows promising creativity. This game may not be a highly polished, good looker, but you should still be pleased & carry this experience on to the next one! Good job :)