Convalescence, yes - you can get it at most chapels, and in Anvil I suppose. That, frequent rest breaks, and the occasional reload is how I made it through that ordeal. And then, if you haven't already, you get to go through it all over again at Bruma. (At least Burd is immortal, but I did my best to keep the other guards alive too, even if they had a distressing habit of charging off bridges into lava.) Got another one for this topic now: The flavor text on the level-up screens "peaks" WAY too early. You're not yet level 20, probably not more than halfway through the main quest line (or any others), don't even have the best gear yet, and it's already telling you that all you can look forward to from here is slow decline. Boy, that really makes me want to keep playing...