Once you defeat the 3 Gigantaur's head to the Nomad Village and change the weather to Cloudy. (You may need to leave and come back too).
Talk to Myta and she should give you this quest.
| HP | 326,400 | Chain Res. | 80 | Physical Dmg. | - |
| Strength | 482 | Stagger Pt. | 200% | Magic Dmg. | - |
| Magic | 482 | Keep | 85 | Fire Dmg. | x2 |
| CP | 1,200 | Launch | Resistant | Ice Dmg. | Absorb |
| Gil | 2,880 | Libra | 80 | Lightning Dmg. | - |
| Wind Dmg. | - | ||||
| Common Drop | Indrajit | 10% | |||
| Rare Drop | Romulus & Remus | 5% | |||
- Be sure you have a Synergist has Bravery and Enfire, I suggest Thexteron.
- Be sure you have a Ravager has Fire-based attacks.
As soon as the battle start you should be in Superiority-X (SAB, SYN, SYN). Get all the same buffs you used for Ochu and by the time you are done the Centaurion Blade will probably be summoned. Cast Deprotect on it and the Immortal.
Switch to an attack paradigm to build Immortal's Chain Gauge. Around now you should see a notification for Electrocute. The trick to this fight is seeing the incoming Electrocute and switching to Tortoise (SEN x3) or Guarded Assault (SEN, SEN , COM - if you use Orion in your Paradigm Pack).
After Electrocute, heal up with Discretion-W (if you can use Orion). This allows you a big break in the battle to heal while Orion keeps the Chain Gauge from falling.
Switch back to Superiority-X to debuff the Centaurian Blade, which gets buffed after each Electrocute. Make sure it's buffs are Dispeled and then you can stagger it. Once it is staggered, heal everyone up quickly. Now go you can switch to Cerberus-X and go all out on the Centaurian Blade.
Once the Centaurian Blade is out of the way, you can stagger Immortal and take him out.
The first time you beat Immortal you will get the Fragment of Invincibility and 30,000 CP.
