[Cerek the Barbaric]

I'm specifically wondering if anyone knows roughly how much XP is available for killing all the enemies you meet before facing Improved Illyich 2.0

The reason I'm asking is because of a challenge laid down by another member that a solo dwarven beserker would be unable to beat Illyich 2.0 and crew on Insane. I want to give it a shot, but I really don't want to take the time to fight all the way up to Illyich. Since this is just a test anyway, I was planning on using CNTRL-Y on the enemies. But I would like to know how much XP I'm missing out on to determine if the beserker would gain a level before facining Illyich and crew.

I would imagine almost all classes (except for multi-class) would gain at least one level by fighting all the duergar in addition to the regular enemies in the Chateau.

So if any of the members that know this game inside out could tell me how much experience to add to the beserker, I would appreciate it.