There are several excellent full-game walk-throughs on the internet already. However, they all say "finish Story Mode" before collecting stuff. Well, I tried. But I didn't have the patience, so I'm uploaded to this site a "walk-through" for collecting various treasure trove and mithril items. The goal is to be able to complete Middle-Earth events before finishing Story Mode, and once you've finished The Necromancer you can do every Middle-Earth event that doesn't require Elf Abilities. Many do, but many, many more don't. Look for "Doing Stuff in Middle-Earth before Finishing Story Mode" in the walkthrough section of this site (submitted for approval on 9/15/2014 so hopefully it is there by 9/20/2014).