As you'll be able to tell, I have fought this pillar a lot. Here's what I've found works:
Get full Spectre Armour with the hood for health regeneration. Full Beetle Armour works as well but you might have to retreat a few times during the fight to not die.
Build a platform just above the pillar (prehaps afterwards) and use Vampire Knives (healing) and the Flaron/Vortex Blaster (for homing in) to kill the enemies. This way, you'll be able to tell when the force field is down before running into a hoard.
The Crawlipides won't attack when standing on the platform (if not hammered). Use Greater Healing Potions (and Inchor Flasks if possible). Don't jump, and try to hit the flying/charging enemies rapidly to stop them hitting you. Equip the Cross Necklace to help if you get swarmed.
Good luck and I hope this helps.