Just reminded me of some things I saw on the Premium battlefield as immortal comments:

Yanaceck:

Added on Wed Dec 3 08:53:34 2003 by 'Rogardian' at level 51 (528 hrs)
He solo'd the Fort inner with no preps without having to flee once. Disgustingly impressive.

Kardock:

Mon Feb 23 23:51:32 2004 by 'Arvam' at level 51 (388 hrs):
This guy is pretty ballsy. Not afraid to hit the Maran Inner even if they outnumber him.


This isn't taking anything away from 2 obviously kick-ass characters, but it does seem like the fortress inner really isn't that strong since I've yet to see a comment on how someone soloed an inner other than the fortress one.