Dread Empire - Glen Cook
Black Company - Glen Cook
King Chondo's Ride & The Lost Prince - Paul Edwin Zimmer

Cenotaph Road, Sorcerer's Skull, World of Mazes, Iron Tongue, Fire and Fog, Pillar of Night - Cenotaph Road series by Robert E. Vardeman.

(The above are Dark Fantasy)

The Darwath Trilogy - Barbara Hambly
All the Fafhrd and the Gray Mouser books - Fritz Leiber

Anyway...the list is longer than I write.