During the armour quest. Anyone else find these incredibly difficult? Even fighting just two of them they chain-pain me so I can get maybe one or two hits in every 30 seconds. I've tried about every combination of potions I have available to me (wolverine, blizzard, swallow, tawney owl, and a couple of others) and it doesn't seem to make a difference. They use "pain", make it so I can't move or attack, and as soon as I recover from one they hit me with another "pain".

Any other tactics I might try?

There are some talents that give resistance to pain. You could wait to do this quest until you've gone up a level and make sure to choose pain resistance when you level up. (If you don't want to wait until your next level up, you can get more talents with the Genie Wish Mod: http://witcher.nexusmods.com/mods/246/ ).

Make sure to use Fast style and not Strong style on Wraiths. Use Specter Oil or Argentia or Diamond Dust on your sword. A Full Moon potion will double your hit points, which would give you more time to recover from pain attacks. You can use Aard to push a wraith back so that it can't hit you while you tackle its brother.

Thanks for the help! I followed some of your suggestions and successfully moved past that part. Much appreciated.