A short video to show you that it is still possible to get the 3rd key fragment for one part of the karazhan prequest solo as a rogue. It took many tries, money and healing potions, so save your time and get a group :P It was fun though.
Combat Specced, 20/41 but my gear isn't great, still wearing some bloodfang pieces and green stuff.

Music: 1st is from the great freeware adventure Out of Order, which you can download here if you want: http://outoforder.adventuredevelopers.com/ (no, I didn't make this game, I'm just a great admirer) i just chose it because for me it matches the instance somehow
2nd is from UT2004 (Rankin).