>>519085boreal forest, summer
I believe I can survive 2 weeks without eating anything and still be able to do something. As for water, unless it was very hot weather 10 bottles of water should be enough if rationed wisely. The biggest problem would be hypothermia.
First I'd use the backpack to make some sort of moccasins and clothes.
Without real clothes I would most likely die for hypothermia during the first night. I'd try to build a waterproof lean-to and under it, some kind of insulated cocoon.
If I had time to build a bow drill I would at least try it before giving up. I would split a backpack strap and use it as a bow string.
>Would you make it two weeks?yes or no, depending on weather and my success with making a fire.