Volatile Blade (Alchemist Archetype)

From publisher blurb:

While many alchemists enjoy the destruction of throwing bombs in combat as much as they like mixing alchemical reagents into useful concoctions, the Volatile Blade takes a different approach, using his alchemical prowess to enhance his melee weapon attacks and keep himself from damage with special mixtures that coalesce into alchemical armor. Volatile Blades are also known for their ability to augment previously mixed alchemical weapons with dangerous additives, increasing the damage they can deal when using such weapons to deadly effect.