The orc corruptor uses Vim attacks and as there are rocks in the arena, make your way to the two in the north-west and try to dodge his spells because soon he'll run out of it. You want the two rocks so that you can get completely out of sight, while you heal. This is where the fight takes place, you let him see you - he hits you/casts something - you get back out of sight. You can right click / inspect him to check how much Vim he has, when he's too low to use his talents THEN you can chase him down.
Also, after first fighting everyone else you should click on Meditation as soon as the orc corruptor shows up
. This will give you a heal bonus, a mental save as well as lowering your equilibrium while you duck and cover behind those rocks. You can actually keep Meditation on while that bone shield is active, seeing as even a 1 damage attack will take it down. He also has a Rune: Shield but it only lasts 4 turns if you can't burn through it.
Oh, and that bone shield starts with 5, generates a new one in 6 turns ( just the one, so left alone it would take 30 turns to get back to 5) but without Vim the corruptor really doesn't have any offense that you can't handle, you just have to wait him out which doesn't take that long. Also in your character file, you had the Rod of Annulment, which puts talents on cool down: this type of fight is prolly where you want to use something like that.
If you have a pretty good regen: infusion, it helps ( that 60 over 5 is blah). If you don't have one, you can always check out Anglowen before you go Anti-Magic as they usually have good ones. ( If you need money, you can always sell whatever Gems you have on you, they are worth quite a bit.) And Nature's Touch may not be a great heal, but it is an instant heal and works well with fungus, soo consider putting at least a point into it as its a life saver.
So wait him out, a real regen infusion, an instant heal and a wild: magical debuff and you should be all set. http://te4.org/characters/63460/tome/f4 ... 919b04b6cd