My lvl 9 Necro and lvl 9 Mesmer breezed thru the mission without even a tense moment, and yet my lvl 11 Ranger had more than 10 attempts, and then it was touch and go right to the end..my conclusion is that low lvl Rangers are slow attacking and and low on damage..I used henchies the whole time.
Just my 2 cents.
Dr Wu
Ruins of Surmia mission easy and tuff !!
Dr Wu