Hi Epyc,
first of all, sorry that I use this point to ask, but I have exactly the same problem with the stones.(Just one portal activated though possessing 8 stones...)
I already tried to sneak behind the demons with one character. Even reached the big bloodstone but could not destroy it with a Tenebrium-weapon equipped, while all the demons hanging around kicking my character's ... ;o)
(All characters are level 17)
May be you could give me some hints to destroy that bloody thing?
Would be very grateful!!!
P.S. Of course every usefull hint from other members concerning this "stone-prob" will be highly appreciated !
Greez!
Lemon