Awesome concept. The first few minutes i totally forgot that i have to deliver something, just enjoyed exploring the city like spiderman, what works very well and intuitive.
Also this compass helper arrows are very helpful.
Actually there is just one main problem, as soon as i reach an item/food, i don't know how to collect. Tried to fly in it, grab it, click actually each button on the controller (one- and both-handed and with and without web-slingers), but they always seem to blink quicker and quicker until they explode directly in front of me...