Needs some work
Animation/Graphics - The drawings/pictures that you used were pretty good. The only thing that I can recommend to make this any better would be to add actual animation to the cat instead of just a moving picture. Perhaps something like an walking legs, etc...
The animation of the moving walls that you had could have been done just a little bit better. I think you should have drawn them a little off of the screen in addition to what you did draw so they looked like they were attached to something instead of just floating in the air.
The one wall in the first level I could go right through on the way back. This made it really easy. :p
Story/Content - The first level was pretty easy. I got through the first time without dying. The second level gave me a problem a couple of time, but I eventually figured it out and when I did it was also really easy. Perhaps adding a level where enemies follow you around or something like that. It needs to be a little harder in my opinion.
When I collected everything in the second level it just ended there. What was I suppose to do? I could just move around until I died.
Audio - I don't remember hearing any audio. I think that you could have added some nice background music and a sound effect when you succeeded/failed in a level or when you collected something.
Overall - It needs a couple of things worked out on it and needs to have much more added to it.