Combo starts from Sin Splitter/Crown Kick. Sin Splitter/Crown Kick - Piercing Fang - Inquisition (1 strike) - Dune Slash - Flow: Dune Strike - Collapse - Silent Breach - Serpent's Coil - Flow: Voracity - Flow: Condemnation - Ensnaring Sands - Retribution.
Use Flow: Sand Wrap in between skills (Except from Crown Kick up to Piercing Fang and Serpent's Coil up to Flow: Condemnation) to reposition yourself preferably behind enemy to maximise damage output.