@homerosi when just taking 1 beam? i mean when your full vit and concentration you should have at least 2,5 mio hp and the same barrier all the time + 35% dmg reduce you get from your heal and a deffbuff your own class has this should do the trick somehow
That's my point really, it doesn't on p2p, ur party just wipes because even the tank can't take the beam without dieing really (and all shields and buff stuff).
Actually we cleared that boss really easily one or two or maybe even 3 months ago on p2p. Had no problems with around 79k gs, though it was a bit stressful to time those rays together with cc'ing the banshee. You've plenty of time to collect those rays, you don't need to collect them all at once. And btw our tank was able to take 2 and one time even 3 (I was really happy as a healer, but he
did survive it

)
So I can definitively say it is possible to kill this boss on p2p.
If you want to know the party setup, I just remember me as healer (summoner), then warden dps and tank was warrior.