So I had a trollish wizard with teleport control, great equipment, loads of spells, and most important stats at 20 or higher. ~180 hp and ~160 mp. Also was perma-invis from a pool.
And I still couldn't beat the ACW in the ToEF. I cleared the tower with no problem at all (had a crown of fire and an Ice Ball spell with R:4). Lured the ACW down to the level below the top; I was going to bolt it, then teleport away to regain MP if needed.
After a couple tries at this, the ACW triple-critted me for an instakill.
What does it take to get a wizard past the ACW? It seems like my bolts weren't even touching it.