Plus if you have a creature, demon or both bring them out they'll take some of the heat off of you.
A skill like 1000 paper cuts or whatever it is could help out in that situation.
But since you said they are all coming at once, firewall would be better I'd think, it will make short work of them or at least make them manageable.
Otherwise list your character type, skills, level and such like Stabbey stated and we could give you some tips.
I don't think at his level he would have a Demon. Demons are level 20, and if he was a level 2, he would have no trouble killing those guys by himself :P
