Here is my 100% Achievement guide for Rainswept!
This is story related and cannot be missed.
When you go outside from Marks Coffee shop, a photographer loses all his photos after a car goes by.
Our job is to pick them all up, until we get to a dog who refuses.
First off, talk to Mark who says you can have a look at the bin, grab a bone and head to the dog.. He is not interested.
So, we go to the old guys donut shop, who gives us a biscuit.
Now go back to the dog who happily trades us the biscuit for the photo.
Job done!
Go to 48:45 to see the beginning of where this unlocks
Hope this helps!