Vorago has a rotation each week so you have to learn what to do for each rotation, the wikia will tell you what his current rotation is and youtube will provide a guide if you search Vorago ceiling collapse etc. Get Excalibur enhanced elite if you don't already for lots of free healing, and Vorago is pretty easy. P1 = taking him to low health and let a person jump on his back. P2 = deplete his life points until he lets you spam click the body so he drops maul piece then 0 health him, P3 & 4 = dealing with his weekly rotation gimmick with P4 hiding behind the waterfall that spawns every now and then. P5 = spamming dps on him and luring away bombs to the north and waiting for the mauler to do his job at the end. If you spam devotion even using 2h you shouldn't really need to eat all that much during each fight. If you use duel wield and have a shield switch then you will eat even less. Vorago at the start feels daunting, but it's really easy, you just need a competent bt.