ways to kill kangaxx without using protections...
1 dragon breath will do it almost every time...
a implosion should do it too...
any magic resistance ignoring spell above 5th level has a good chance...
"Pushing Kangaxx around, ring of ram exploit
Now here is just a fun one, one that is just too funny....killing kangaxx is almost a chore, these days...the challenge, and the great loot is dropped by his guardians if you have the tactics mod installed, so killing kangy is rather a let down...simply protect the party with protection from undead scrolls, except one mage or sorceror, who uses spell immunity abjuration so you do not get the "unkillable kangaxx" bug from having all members of the party protected from undead, (until the protection wears off, kangaxx cannot see or initiate dialog, so his dialog will not initialize until the protection wears off, no dialog, he cannot be killed) then bash with a weapon until he croaks...but here is a really funny one...if you have jan in your party, and you decide to pick up the ring of gaxx late in the game, so jan has spike traps, do the quest, get all the pieces together, then have jan plant as many traps, spike and regular, in that little platform at the end of the path that goes up to his coffin...once done, have someone equipped with the ring of ram, and trigger kangaxx...after killing his first form, when he transforms into the skull form, have the npc with the ring of ram use the ring on kangaxx...he is damaged, but more importantly, he is pushed among all the traps, which all trigger, insta killing him....i included this fairly trivial bit of cheese for fun, and to illustrate a point..."
or just bunny nuke him....