Wow, this is a really unique concept. That zooming mechanic really gives this game it's own personality. You could do so much with that.
The controls feel nice and tight, and the objective is very clear. I won't judge on graphic quality. It is a ludum dare submission, after all.
I also noted that the game never felt repetitive. Every level of the game had it's own unique level of difficulty. The whole thing felt very well planned.