I've reached the point of no return in Bastion's story. I know that there is a New Game+ option, however, my decision on whether or not to go forward with the story at this point hinges on what is kept and what is reset. For example, I don't want to drive myself crazy trying to finish all the Proving Grounds if they're just going to be reset in New Game+.

I'm currently running on the assumption that your level is kept, but otherwise, I'm unsure as to what all resets. I'm wondering about:

 - **Vigils?**
 - **Proving Grounds?**
 - **Weapons and their upgrades?**
 - **Buildings and their upgrades?**
 - **Accessibility of Secret and Weapon Skills?**
 - **Who Knows Where progress?**
 - **Items in my Pack?**
 - **Number of Fragments?**

Please feel free to mention anything I may have forgotten that is not included in this list.