How did YOU destroy Kangaxx?, We know it's not that hard Options

[Baronius]

How did YOU destroy Kangaxx?

Starter players have serious problems when fighting Kangaxx, even after several attempts.
I don't ask here for solutions, since we all know there are *several* (for those who don't know any and are interested, this thread will be useful then)
To each his own, so I am interested in the way you ceased the existence of the (demi-)lich.

I had Jaheira in my party who could summon Elementals (she was higher level than the party average), and my protagonist could cast the spell 'Immunity: Abjuration'. All other party members were too weak to do anything (too low level), especially against the demilich form (too high THAC0 of warriors, e.g. Minsc hadn't got even proper weapon; all spells were obviously ineffective on Kangaxx). I didn't have enough Spell Immunity: Abjuration spells (its duration is short), so if I remember correctly, I simply used Protection from Magic on Minsc before the battle. When Kangaxx transforms into its demi-lich form (the battle wasn't hard at all until this point), it starts using Imprisonment almost constantly. It was ineffective on Minsc (protection from magic was still on from the beginning of the battle), and meanwhile Jaheira summoned a few elementals, I think she could summon only two; Air Elementals preferably.
Now comes the best part: the Air Elemental was doing damage to Kangaxx (I had the elemental attack the lich from the back), but Kangaxx did NOT turn back to imprison the Elemental (unlike it does with characters). Perhaps it imprisoned one of the elementals but then Jaheira summoned another one which killed Kangaxx.

To sum up, Kangaxx can be beated with a low-level party easily if you have a Protection from Magic Scroll and can summon some elementals.