During this chapter Noctis will meet Gladio's sister and will learn about the existence of other ancient weapons. Additionally, he will meet a strange man that insists on helping the party.
Burden of Expectation
Recommended level: 10
Reward: Magic Flask x1
You will end up in a familiar workshop. Noctis will receive a call from Iris, Gladio's sister, who wants to meet. Before you head to the specified location, however, Prompto will suggest visiting a Chocobo farm (an optional hunting quest). If you want to unlock Chocobo's as possible mounts, you have to head to the farm.
Once you're ready, head to the town and meet with Iris. After a long series of cut-scenes the woman will ask the prince if he wants to go sightseeing with her. You should agree to it - this will give you a small exp bonus (+200 exp).
A Stroll for Two
During the walk it's worth it to show interest while near merchant stalls (+250 exp), support the idea of women working at the power plant (+250 exp) and joke about the topic of date (+2 AP). During the walk you can also visit a weapon store to purchase new equipment for your whole party.
Once you're back at the hotel, you should agree with the woman that Noctis had a great time (+500 exp). Inside you will learn about a mysterious sword, possibly one of the ancient royal arms.
The Sword in the Waterfall
Recommended level: 19
Before you venture on the quest you should purchase supplies. Invest mainly in Hi-Potions, as you will be facing a lot of enemies. You should also try to eat a decent meal to strengthen the party. Head to the waterfall where the ancient sword is located. Avoid any contact with the powerful (50+ level) cobra and defeat a group of large crabs. Afterwards, head behind the waterfall and enter the dungeon.
There are numerous Imps, Arachnea and Flans inside the dungeon. All of those enemies are vulnerable to fire magic. There's also a new type of enemy here - Ronin, a demon resembling a samurai. Those foes are strong, which is why it's crucial to block their attacks and try to use Royal Arms. Additionally, explore all of the branches of the cave to collect numerous items. Sometimes you will need to travel along a narrow edge to get further into the dungeon.
At the end of the dungeon you will stumble upon Mindflayers, accompanied by other strong enemies. The encounter is quite difficult, but the entrance to the royal tomb is near. Once inside, Noctis will acquire a new weapon - Swords of the Wanderer. Additionally, the prince will gain a new ability, Armiger.
The Way of Gods and Kings
Recommended level: -
Go back to Lestallum. Get inside the hotel - Noctis will have his "visions" more often, signaling that something is not right. Head to the nearby observatory. A mysterious man named Ardyn awaits you there. He will offer his aid. Follow him to his car and agree to a ride, which will end the chapter.