Just wow.. such a cool game. It's hard to find anything, that could be improved, you pretty much nailed everything. I like how the colors of the menu buttons are the colors of a traffic light (I'm not even sure if it was intentional design).
I was a little unsure what the "24 of 24 orders complete" meant, did I complete 24 orders with 0 fails, or maybe 24 orders were the requirement for the level and I got at least 24 orders.
Anyway, incredible job :)