I'm not sure if this would work or not but I just randomly thought of it while fighting waterfiends with a Bunyip. Something I noticed is that when you use the Bunyips ability to swallow whole your character doesn't stop attacking because it's not your character making the action. So after putting about 2m into supplies which I subsequently wasted on trying to fight him the advertised way, I wondered if perhaps you could just take a range potion, 50 swallow whole scrolls, diamond bolts, as many rocktails as you can carry and a bob full of rocktails. When the fight starts dismiss the tortise and let the rocktails hit the ground, pot up and pray eagle eye or better and summon bunyip, then start shooting and using the swallow whole ability like mad. It just seems to me like you might be able to do 15k damage before you run out of rocktails. You cant actually eat any faster then normal you just dont have the pause in fighting while your attacking. Obviously I don't know if this would work out or not, and quite frankly I don't have the cash to experiment. But this just seems plausible for high level players (130+) who don't want to bother with the hiding behind the pillars and technique. I personally love quests and see this fight as the current pinnacle of all quest fights, so if this does work it seems kind of cheap to just blow through nomad like this, but having used so many resources on him I wouldn't mind doing just this if I had a little better stats and the ability to produce rocktails without spending a small fortune.