Reel yourself close to Berial's head using the Grim Grip and attack with your sword. When the combos are done use Grim Grip while still in the air and when his flames are gone jump up and grab his head with the Devil Bringer. When he lands use Devil Bringer again to throw and punch him. Now run away a short distance to avoid an explosion he releases in the area around him. Make sure to pick up Green Orbs from the destroyed buildings and roll to avoid his flame geysers and sword attack. Keep attacking using this strategy and remember to use your Charge Shot and you should be able to defeat him in under a minute.
Added by: Sanzano Mar 18th 2011, ID#16027