i went with a pug in the first lockout. managed to down flame leviathan and deconstructor. haven't been able to go back since, but we also had problem with the ignis trash (which made us skip it), and for the life of us couldn't make it work with razorscale. i guess we just need to do the fights over and over again until everything in the encounter becomes trivial. anyway, the average dps was 3200, everyone was bringing food and flasks, and we took six attempts on deconstructor, four on leviathan, and spent three on ignis trash and six wipes on razorscale. so for a pug, we were both pretty dedicated and pretty decent. still, you can manage to put those pugs together if you have patience, and if you are harsh on gear/achievement filtering.