Reaper's Eye

the long version

"Daryus Gaunt used to be a crusader, before a questionable battlefield decision forced him to desert his unit. Pathfinder Shiera Tristane is an adventuring scholar obsessed with gaining the recognition she feels was stolen from her. When both are contacted by a sinister talking weasel and warned of a witch about to release a magical threat long trapped beneath an ancient temple, the two have no choice but to venture into the demon-haunted Worldwound in order to stop the disaster. Yet there's more to the situation than either realizes, and neither fame nor redemption will matter unless they can first survive"--