This DLC contains one Legendary Hunter (Monroe), a Legendary knife (Pane), and a Legendary Romero 77 (Lock and Key). 

Henry Monroe was committed first to the asylum to his detriment, then to escape by whatever means necessary. The first attempt ended in Monroe gaining the attention of Huff himself, but it was not totally in vain, a shard of window – Pane – scavenged from the floor would become Monroe’s signature of sorts. His real escape came during a moment of chaos and confusion, when the warden’s infamous Romero – Lock and Key – became his possession. Destitute in the bayou, hunting was his only recourse, and belied a new commitment: to survive and to spite those who’d caused his suffering.

MATURE CONTENT DESCRIPTION

The developers describe the content like this:

This DLC may contain content not appropriate for all ages, or may not be appropriate for viewing at work: Frequent Violence or Gore, General Mature Content