Well, I haven't faced with Lich, yet. Just some mages in the first challenge. They were kicked swiftly so they had not time to express theirself.

Illasera prepared for me WHOLE HOUR of insanely frustrating fuck. Not that she have mage and cleric. These two seems to be confused a bit. Just do not give them so much invo potions, oils of speed, dispelling arrows and watch the result.

Cespenar and commoners still don't do much to save theirself from your rage.

I uninstalled it before Gromnir. It is just too annoying.

What are the improvements exactly? Does fighters and hordes now organize better attacks?

Hm, it doesn't seem like this mod is something for me, as my tactics always involve abusing BGII's stupid AI.

Mmm, a new ToB character might be much too weak to take on the imrproved Ilassera fight alone. Both because of low lvl and lack of good items. Maybe get along a few of the NPC's; beat Illasera and continue solo. Plenty to Xp and great items to get in ToB, so you should be a strong and well-equipped char in no time.