Corporeal Beast is end-game content. Look at the 1000's of hours someone like MmorpgRS spends getting kills on OSRS 10-12 minutes, with 10 minutes of that as prep (BGS/ARC) Corp isn't suppose to be easy, nor fast..
Cool QOL's and fixes Matt.
I'd like the items I gave you, to refresh your memory I have them listed below;
Amulet of Torture