So it appears that doing the Claptrap DLC in playthrough 2 wasn't such a smart idea after all. While it's boosted me from level 44 to level 47 fairly painlessly, pretty much everything has a couple hundred times more health than it should've... and kamikaze claptraps oneshot you and are useless for second winds.
Excessive amounts of health notwithstanding I've made my way to the MINAC... where I died thrice in quick succession. Everything — from the ten turrets to MINAC itself — seems to have pretty much infinite health. It probably doesn't help that my best weapons are fire and not corrosive.
At any rate that puts me kind of in an ugly spot. How do I tackle this monstrosity, grinding of gears and wobbly heads and pink panties notwithstanding?