Help getting through Zertinan Caverns!

[GOD GUNDAM]

Well, I'm just a lv 30 Vann meaning I haven't advance onto the storyline, but when I used my Iron Sword on Slime it takes zero damage, but my cousin's Vann uses a better sword on the Slime and it takes at least 1,000 damage so do you guys think that I need to get a better sword and/or what magic spells should I get then? Also, does a lv 30 one person party can survive going through all of Zertinan Caverns?

[Renmiri]

Flans are immune to physical attacks. Your cousin's sword must have a magic side effect. Spells or Techniques work too. Try Horology or Fira, Watera, etc...

Level 30 ? Don't go too far deep into it. If flans are pwning you then the skeletons close to Adrammmelecht will make mincemeat out of your party

[Dreddz]

Going into the Zertinan Caverns is suicide...

[GOD GUNDAM]

So, if I buy a magic/techique for my Vann to use, do I still have to buy it again for my other characters?!

[ValiantKnight]

the actual spell Cure 200 gil is global to all characters.

However you still have to buy the license with license points for all 6

[Cruise Control]

Get a sword with an element. I made it the whole way through looking for Marilith at level 30, wielding Ancient Blades (Earth).

[Renmiri]

So, if I buy a magic/techique for my Vann to use, do I still have to buy it again for my other characters?!

No but you will need 6 licenses