In order to unlock Ifrit in Final Fantasy Brave Exvius, first you need to progress through the story missions until you unlock Port City Lodin. Once you’ve gotten access to Lodin, talk to the street seller in the middle of town and he’ll give you some intel about Port Ordol, a mysterious island. Once you’ve done this, go to the left of Port Lodin and look for a sailor standing at the pier. Talking to him will give you the option to travel to Port Ordol.
At Port Ordol, talk to the little boy in the city and he’ll tell you about a fiery spirit who lives in the Inferno Hollow near the town. He describes it as a “freet.” Once you’ve done this, you’ll then unlock the Inferno Hollow dungeon on your map, and you can travel there quickly to fight a few battles and challenge Ifrit himself.
Be sure to stock up on healing items before challenging Ifrit. It’s also a good idea to try to get a Mage who can cast ice spells, though he shouldn’t pose too much of a challenge even if you don’t have an Ice Mage.
Final Fantasy Brave Exvius is now available on iOS and Android devices. Happy hunting!