Lord of deliveries!
After 2 long sessions of pizza delivering, I finally reached the top rank with 500 pizzas delivered :) ... And to be honest, that took much longer than it should have done for a game this repetitive! The top rank should be at more like 250.
I thought the overall game was very good and creative, although the repetitive missions means you probably wouldn't want to come back and play it again.
I was also a bit confused at first since I assumed the most important objective would be to deliver the pizzas quickly - but in fact, the only thing you need to worry about is damage!
The mini-quests were also a nice touch you added, however, even after delivering 500 pizzas I still feel like I've only completed half the game since there are so many items I haven't found/delivered. Since there's no map of where to take the items, it takes ages to work out where things are meant to go - so I ended up giving up on that!
And on that topic, how are you meant to get into that area with 3 items in it around the bottom right of the map? It's completely boxed in, and there are no clues for how to enter.
Anyway, this is a great game but if you decide to make it sequel, either make it shorter or less repetitive... and give us some sort of guidance on what to do with the mini-quests!