I'm looking to completely obliterate everything on my 360 that has anything to do with Skyrim, and start over from scratch. No save games, no achievements, no nothing. I know it can be done, because I did it once before with the original Crackdown.

But now, I can't seem to remember how I did it (not to mention the dashboard underwent major revisions). I've deleted the saved games, but that's about it. Heck, when I create a new save game, it's still listed as savegame five hundred something; in other words, the 360 still remembers all the previous saves, and I still have all the achievements.

How do I start fresh, and be able to truly start from scratch?

Play on a different profile...

You can't delete achievements unless you have 0 gamerscore. You can obviously delete your saves tho. If you want 0 saves and 0 gamerscore you will have to start a new profile and play it there

i'm pretty sure you can delete games from your 'played' list. i did this with a few games i havent played since 06/7. i cannot be sure if i had any gamerscore on them though.

Uninstall skyrim, delete the patch, delete the saves, play a different game, insert Skyrim, install it, install the patch, new game.