Heroes for Vanguishing Tryia

I've tried a number of builds for vanguising ascalon and northern siverpeaks with heroes but i cant seem to survive/damage them a whole lot. I (assasin) use Dunkoro-Olias-Master of Whispers with a MM-SS-Healer and me and i cant seem to kill much.....If anyone knows any hero builds that can be effective with only four people will you please share.

In those regions, I used heroes that didn't rely on blanket output. My opinion is that Minion Masters aren't overly useful in some hard mode areas. You'd probably find it very useful to use Jin and to bring daze; the healers are very frustrating. Shield of Regeneration is also rather useful.

my assassin successfully did all of tyria vanquishing with 2 searing/ water eles that had blurred vision and steam for defense, dunkoro set up as an lod prot hybrid and myself running d stab, exhausting moebius, death blossom. hope that helps