From publisher blurb:
With the advent of the unchained monk, almost all the old monk archetypes became outdated. The changed class features simply makes most of them illegal. There are over 30 archetypes that can no longer be used! This is a fix, adjusting the old monk archetypes to work with the unchained monk class. Each has been worked over to comply with developments in the Pathfinder game. The aim has been to preserve the feel of each archetype more than to preserve every ability verbatim. A some archetypes have been extensively modified, the kata master, wildcat, zen archer, and nimble guardian.
So, without further ado, here are the unchained monk archetypes.