Nice visuals! If you made these yourself, congrats very cool :-) 

The game runs nicely and is pretty fluid. Actually quite a solid game.

The gameplay loop personally was a bit too slow paced for my tastes, having to eat a lot of cheese feels more like a task than a challenge. The enemies are a nice variation but they need to do something slightly more interesting. Somehow. Not sure.

In terms of level design: Level 3 is the hardest. The levels after that are relatively easy.

I managed to finish it though :-) 

Fun concept, great visuals, the sound of mouse eating honestly jump scared me lol as I was where headphones. One improvement I could see is making the moldy cheese a bit more green and change the background. Overall fun game great submission and use of limitation!