i'm currently doing portal combat where i have to defeat zarathax. i got the portal opean and try fighting zarathax but lose, unfortunaly i didn't put a mark location near the entrance of zarathax and now i can't seem to go through the portal. is there a requiement that i must do before the portal opean again? sorry if i miss spell anything.
have someone who has done tower archives to go through the portal and become their friend before anything then go to their location when they go in. thats what i did and good luck your going to need it :-D