oola's lab

On the 1st lv of the dungon (not the quest) there is a door that will not open its by the (i think) the 3rd shirne. how do you open it? i checked the wiki and it does not help. says that Xein must be killed but i have not found him once in the dungon and i have killed all the baddies. any ideas?

thanks for any help

You have to have the quest http://guildwars.wikia.com/wiki/Litt...hop_of_Horrors active. I did the exact same thing about 2 days ago

thank you so much man, i was pulling my hair out.