Cute concept, it is cool that you make a tutorial level and a full level! I really liked the graphics, they are so cool! As for mr, I feel that the theme is not presented, also sometimes the music disappears. I suggest you make two things:
1) Gallery of all deaths - it can be fun to collect, also adds replayability
2) Improve the level design a bit, because I didn't understand why I had to collect small pieces of cheese and what the point of the train was (I finished the level without it).
Still, it's a cool attempt!