Technically there's a catch 22 to your situation. Once you reach floor 99, you can farm them to your heart's content.
Which bugger decided on that I wonder? What good would it do if I could reach floor 99 in the first place?
edit: I gave in and used a precious potion to respec my sorceress. I'm solo at floor 34, and I'm getting instant killed by quite a few monsters. Removed curse, dumped points into more vitality boost.
edit2: Some LoC discussion:
I skip all rooms that can be skipped, I try to only use 1 bag for each floor since I only have 1 optimal set of equipment. Taking only 4 spells now means I can take a fire staff in addition to the primary ice staff.
Hardest bosses as a solo sorc:
Minotaur: about 4 out of 5 attacks the minotaur dishes out is an instant kill, in addition to the green orcs which can also kill you instantly (unless protection is active).
Wraith: I light both statues then leave the torch in the center. The mobs are annoying, but can be gotten rid off with rock press.
Red Dragon: The actual fight is not hard but he does a crapload of damage per hit.
Ninja pirates: I skip them if I can, otherwise I cast Blizzard and hope I don't get hit.
Essential equipment attributes:
+xx% health on stage transition
+xx% damage
-xx% damage
xx chance or resisting knockback on spellcast
+ 1 health per hit (amazon LoC item)
+ 20% damage on enemies with status ailments
50% chance of using no mana
+50% spell strength
For the heck of it, I made a video showing a comparison of the narrators. I used the Tim the Encha -- er, hermit dialogue because that's where the narrator usually does the funniest acting.
http://www.youtube.com/watch?v=53kn2Y5HvNA
I think Elf and Dwarf overall are the best narrators to use.
I personally like the Sorceress the best.