I loved the hand-drawn art style, it's so simple and cute! The cat is adorable. The character controller is spot-on as well; it's very simple but feels precise and pleasing to use. I didn't see any bugs during my playthrough!
The only piece of feedback I have is that I often found myself taking a "leap of faith" to jump to platforms I couldn't see yet. This was especially tricky in the cat level when heading down. It might be cool if the camera could pan just a little bit to reveal the path ahead. Otherwise, it's a really well-made and charming little game!