Players have been making a competion of how fast they can Kill the Adamantoise. Here we can give you the best Tips on how to Beat the Giant Boss. Originally the boss was suppose to take 72 hours to kill. Final Fantasy XV How to Defeat Adamantoise in Less that 10 Minutes
You need the Zwill Crossblades from the Randolph quest line. You will also want to equip the Sword of the Father, as well as the Axe of the Conqueror for enhanced strength. For accessories, use anything that gives you the most strength, or employ the 2 Dark Matter Bracelets and hit 9999’s. For the outfit, wear the Prince’s fatigues, no jacket, for added strength. For food, use the Marrowshroom Chowder as this gives guaranteed critical hits. The Kujata Marrow does not need to be farmed and can be purchased in Lestalum for 1300gil. These are some preparations for killing Adamantoise in less than 10 minutes.
The only tech you will need for conquering Adamantoise is Enhancement from Ignis, which will add a little more damage to your attacks, says Nova Crystallis. Use this as soon as you can. Start on the front left leg, then attack it with the daggers. Just keep pushing it repeatedly and blink strike when the leg moves back. Build up your Armiger meter quickly; but do not use it just yet because you do more damage with the Armiger meter full. He will go Vulnerable for the first time quickly.
According to TwistInTh3Myth, you have to get Ignis to use Enhancement right away so it lasts the entire duration of this part. Blink strike above his neck, use a high potion to ensure your full health from the daggers, get the damage bonus and then start attacking the side of his neck. Attack towards the front of that oval pattern on his neck where the tusk comes out. You will notice all of the damage is 9000-9999 for each hit and his health will melt off. When the enhancement ends, it will drop down to the 6000s.
As soon as the Vulnerability stage is done, blink strike back over to his front left leg, pop Armiger and go to town. He should go right back into Vulnerability and then repeat the same thing on his neck. You most likely will not have the Armiger meter filled, but it fills quickly and you will notice your damage gradually increase as it does. After the Second Vulnerability phase, switch over to attack the right leg. Use Armiger and then head back over to the neck. These are the things that you need to do to kill Adamantoise in less than 10 minutes.