6) Melee mobs are very easy, you just kite them to death. Range mobs are pain in the ass! If there is only one range mob you burn it down quickly while kiting melees. But if there is more than one ranged mobs you probably going to die..you simple can't burned them down both before they kill you..you can dodge 1-2 of their attacks but after that...if you are lucky and there are objects nearby and can play with line of sight maybe you will make it
Elementalist are glass cannons and usually in MMOs glass cannon classes have high dps to balance their weakness, but in GW2 that isn't happening.