Mark Hunting question

[eppy19]

I just beat Behemoth King and I have not beat Vayne, do i have to beat Vayne in order to fight Omega and Yiazmat? I have not beat Zodiark yet, does that matter? How do I get to fight Omega and whoever else is after Behemoth King without beating Vayne?

[PuPu]

do i have to beat Vayne in order to fight Omega and Yiazmat

Since he's the final boss, and beating him would end the game, no.

I have not beat Zodiark yet, does that matter

I don't think it does.

How do I get to fight Omega and whoever else is after Behemoth King without beating Vayne?

Omega Mark XII: You must accept the Yiazmat hunt in order to fight him.
For his location, look at this map of the Great Crystal.
GameFAQs: Final Fantasy XII (PS2) Giruvegan Great Crystal Map by Lucleonhart
Omega is in the area after Waystone XXVI. In order to reach him, you must first open the following Gates: Aquarius I, Libra II, and Capricorn II (A1, L2, C2). Next, activate the Taurus Gate Stone and run past the A1, L2, and C2 gates and open Taurus Gate I (T1); make sure you do it quickly before the time limit runs out. Now teleport from Waystone XXI until you get to Waystone XXVI, and Omega Mark XII should be waiting.

I'm not sure what you mean by "after" Behemoth King, since I don't know which ones you've done, so here's a guide you should probably read. It includes all Marks, even Yiazmat.

GameFAQs: Final Fantasy XII (PS2) Mark Hunting Guide by trowabartan

[eppy19]

Well I have defeated 44 marks. I don't know how many there is, but none left apparently none on the bills and Montblanc doesn't have any left. Apparently I got to beat Hell Wyrm???

[Shattered Dreamer]

In order to fight Yizmat & Omega you have to do all the hunts up to that point & beat Hell Wyrm, I'm sure do you have to get all the espers. Obviously you dont have to beat Vayne because(SPOILER)that would end the game

[eppy19]

Is this Hell Wyrm hard? Any strategies or tips?

[Shattered Dreamer]

Hell Wyrm to begin with has alot of HP but you can fight him several times you can leave the room where it is & come back & it won't of restored its HP. Its physical attack does about 2000 - 3000, it likes to cast Thungaga, Blizzaga, Firaga & Darkga well at least thats all I saw but I have a nasty feeling he may have a high damage spell like Shock or Scathe in its arsenal not sure. The main thing you need to worry about is its attack called Judgment. It causes 6000HP or so & causes Stop everytime so Power Armlets are a must.

The best way to beat it is just to use physical attacks & keep buffing your characters with Bubble,Protectaga,Shellaga & Hastaga. Make sure to have Curaja or Renew for curing setting these to a gambit would be a good idea. Now all you gotta do is find him.

[eppy19]

Hmm I opened all the doors of hours and still didn't open the door to Hell Wyrm, I started from the most south and went left to right, and nothing happened. Can someone be thorough?

[Renmiri]

map

[eppy19]

I did that and it opened a door to a rare monster, I haven't checked but does doing that open the door to Hell Wyrm too?

[leader of mortals]

map

lol thats still the wrong secret door

[eppy19]

I know that just leads to a rare monster. So how do I get Hell Wyrm's door open???