Picture i just kill Corporeal Beast in his last Hitpoints.
::item 391 28 (Manta rays)
Do it when half inventory have free space for food.
You will need 5 Prayer pots (3/4)
Full void = Higher Hits and faster kill.
New Crystal shield = For protecting his Melee attack.
Amulet of Fury = Higher Defence bonus
Fire cape = Higher Combats bonus
Dragon boots = Higher Combats bonus
Dragon bolt (e) = Extra effect hits
Trick & alive
do ::item 391 6-15 depends how many free space you have but must be quick cause you never know how high he can hit on you.
Have Magic protect on cause he use both Melee and Magic so it will be hard for you if you is a low lvl .
he drops spirit shields and is rare.
Good luck for solo him!