get the skill subversion in ablities, it swaps healing and dmg around so when he heals he kills himself, it only last 2 turns so figure out when he uses his heal move.
being a non-membeer ob runescape is like being crippled, you can't do all the things want to do so you compromise, and unless you pay you'll be crippled for the rest of your life.
OMG i almost had a meltdown playin complex, i appluad you for nearly causing total obliteration of my keyboard lol. it is a seriously good game though. Very challenging...