Won with MNK BLU THFx2 RDM WHM, used one weakening item. Hardly a 'zerg setup' and it was close but we still won.
MNK died from back to back Asuran fists at about 30%. One THF died to hundred fists, remaining one used perfect dodge but died once it wore off. Kited it for a bit on RDM (Moves at normal speed and Horlais Peak is massive) until we could finish it off.