Equip Combat Lore to increase the experience received from each strike and Bloodthirt to restore your health. Start the battle with the Stygian (Ashlands Boss) by killing phantom guard soldiers while riding Ruin. After the Stygian frees itself, ride alongside it and attack its body. Note: Avoid hitting the helmet or Stygian will attack. The Stygian will disappear under the sand then resurface. Repeat the process to increase your Chaoseater Blade level. If the Stygian attacks, ride Ruin to the closed doorway during the battle. You will jump off and have control of Ruin. Keep your back against the door and wait for the Stygian to directly at you. You will get knocked through the door and can return to Vulgrim to reset the battle.