Quote Originally Posted by ServerCollaps View Post
they removed tank busters from all bosses. They are fairly easy now, since you can just spam sustain potions anyway
sustaining Potions are not the only thing you need. You need to know your job and POTD in and out. DPS in general (unless RDM) will have to mitigate damage by using virus, bloodbath etc. Bards will have the hardest time, as they only have potions and second wind, but nothing else to mitigate.

So you need: skill, sustain potions, food and luck. Infusion potions are highly recommend on later floors.