If you wanted to finish at the lowest possible level, you might just want to take the armor in the council of seven. It's in a chest, just like the closed helmet. It's called: Dwarven Plate Armor. If you want to finish at a higher level, the Helm of the Dragon is the best helmet. The Larian Armor is also very good, but you'll get a bunch of xp killing all the bugs.


BTW The Castle is called the "Imp's Deserted Castle", and if you walk around it, you find a bunch of dead Imps. And Alrik even says that a cult of Dragon Worshipers live there. With all that information, you can probably make a reasonable guess...

"Oh Lord, how long will the search go on?"