Died to the Grand Corruptor in Charred Scar

Playing as a Bulwark.

I had decent resistance (50% blight, 11% all), the rune of dissipation and a silence torque, but just could not out damage two mages at the same time. I was struck down with 100+ points of darkness damage as I was trying to get away from them.

Consider going Antimagic next time

Bulwarks are particularily weak against the mages, it's just how they work.
Though Antimagic forbids you entering Angolwen or using runes, it can scale from your Physical power, which is good for melee fighter.
Arcane shield-wielding is more about Sun Paladins or Demonologists.