Complex sentence: The work of Charles Willeford has sometimes been referred to as hardboiled or, particularly, noir fiction, though it is perhaps more helpfully characterized as "neo-noir," as Willeford's crime writing rarely employs the conventions of hardboiled literature without critiquing them.
Split into simpler sentences: The work of Charles Willeford has sometimes been referred to as hardboiled or, particularly, noir fiction. But it is perhaps more helpfully characterized as "neo-noir," as Willeford's crime writing rarely employs the conventions of hardboiled literature without critiquing them.