Thanks for the interesting tips about those hexes and resistance. The confusion tactic from SirAaronIII seems to be a very interesting way to deal with him, i hope those potions i'll have to throw will actually land on him
I'll have to try the "2 little girls" trick for the gene machine, after grinding a bit after purchasing the expensive "Sage's Helm" at Miral and Garok's workshop, i have slowly managed to get enough medals again to go purchase a dominate rod.
Finding little girls is not that hard as they're often spawning in the dungeons i visit so it will be easy to get them controlled and get the gene merging going for that catsister ally, she has a lot of speed so she could be usefull when she'll get enough level and Travelling will surely help once she gets it.
The "higher level than him" that alway mentionned made me curious, and after looking around some Elona discussion it seems that being higher level than your target makes a huge difference in term of your resistance to their attack and their resistance to your attacks.
I'm far from the level 55 Zeome is (just reached being level 36 after 60 hours of that character), so that may possibly explain why his chaos attacks are so devastating on me despite i have lots of chaos resistance (my poor minions are killed in 1 or 2 turns due to the lack of chaos res items i could give them) and why my powerfull magic dart does not hit him as hard as it does on strong monsters (but that do not have that much levels in difference with my character).
Though from my tests, i'm not far to be able to defeat him (i have foreced him on healing many times), the only real problem is the Silence being too unreliable on his high resistance to it, if only it worked in my first zaps on him i think he would be easily dead, but by the time i manage to have a zap working, my minions are dead due to his chaos spell spam.