Here's some tips.
#1 don't let boss level from someone dying.
#2 upgrade armor as much as possible.
#3 magic reduction/immunity items and abilities are very useful for Hellfire.
#4 if needed, pull for a single player to get a legendary item.
#5 if you reach level 49 without losing a single life then a random player will be given a legendary gemstone (who is under 1000 kills)
#6 use a transit pet for storage of all aura items that can be bought from Shop Till You Drop
#1 don't let boss level from someone dying.
#2 upgrade armor as much as possible.
#3 magic reduction/immunity items and abilities are very useful for Hellfire.
#4 if needed, pull for a single player to get a legendary item.
#5 if you reach level 49 without losing a single life then a random player will be given a legendary gemstone (who is under 1000 kills)
#6 use a transit pet for storage of all aura items that can be bought from Shop Till You Drop