I just helped out on general Niall for an hour using the gold finger for a bit. I'm an astrologer rocking a moonlight blade thing. The fughts that took around 20 seconds were ones that the boss was walking to me in a straight line. The ones that took 3 minutes and a lot of difficulty were running the boss all over the place. If I pop a physik and you are kiting the enemies away from the death beam, the whole fight will be much harder. You can literally stand beside me and watch baddies melt. One physik will take 3/4 to 7/8 of his health away and the two buddies he has will walk right into it and die as well. It cleaves so no power is blocked or lost. Just a heads up to make it easier on yourselves.

Cheers!