Need advice on Titan Quest mastery combos

[shortylickens]

Its been a long time since I've seen a Titan Quest thread and I couldnt find one to bump using the search function.

I currently have a level 18 elementalist. It took me a while to find a decent combination of skills, eventually I just put every point into fire and ice enchancements for my weapons. I have a pretty decent fire staff with upgrades and I am averaging 266 damage per second with it.
Just hit Egypt and I noticed that while I am able to kill enemies fairly well I keep getting my butt kicked by them. I dont have any defensive abilities and am lacking the strength for good armor. I have tons of healing potions but you can only use those so quickly and I sometimes get wiped out before they refresh.
Did I do wrong by not picking masteries that balanced each other?
Should I rip away points in one section and add them to Stone Form?
Or should I put those points into area effect spells and hope I can keep bad guys off me?

I also have a level 8 Conquerer, Brigand and Soothsayer. Again I didnt choose balance so much as masteries and skills that enhanced each other. Had a little fun playing with them but now I'm focusing on the Elementalist.

 

[Slew Foot]

It's been a loooooooong time since I played it but you can try to put some points into the Fire summon- The earth elemental i think. Bad guys attack him first so theyll stay off you, and he can take a ton of damage.

Of course, I was a summoner, so that was the entire basis of my character.