Lightning Returns: Final Fantasy XIII What Rough Beast Slouches is probably the most difficult quest featured in the video game developed by Square Enix; and it has one of the largest payouts offered by a client.
In What Rough Beast Slouches, you have to retrieve the Monster Flesh from a dragon named Aeronite. What makes Aeronite the most powerful enemy in the game is the amount of health he possesses.
Practically, Aeronite has almost 10 times the health of Bhunivelze, the final boss, and it is resilient to physical attacks.
Furthermore, Aeronite is a master of the elements and it casts all spells included in the four classes.
Description: “Inside the southern entrance to the Temple Ruins, on the upper level of Scorched Earth, Lightning meets a man who presents Lightning with a perilous mission. He claims that a terrible beast has appeared to herald the end of the world, and he wants Lightning to find this beast, the Aeronite, hunt it down, and bring back a sample of flesh.”
Location: Dead Dunes
Requirements: Complete main-quest 4-3: Where the Clavis Lies
Rewards: 8200 Gil, Recovery HP + 120, Strength + 12, Magic + 16, Pro’s Beret Adornment
To begin What Rough Beast Slouches you have to find Nolan, the quest-giver who resides inside the Temple Ruins.
Here you should see a smaller sub-area surrounded by a fence. To enter the fenced area you have to use the ladder on the upper level, which leads to a smaller chamber, east from the closed zone.
When you get inside, look for a man wearing a black shirt and a large brown hat. Make sure that before talking to him, you open the sphere nearby to retrieve the Golden Scarab (Digging Mysteries Global Canvas of Prayers quest).
Next, talk to the NPC for additional details on Aeronite. Accept the quest, then exit the Temple Ruins and head to Ruins North Gate Warp Point, in Giant’s Sandbox.
In this area you will have to find Aeronite; however, don’t look for a large dragon, but for a small black cloud that moves around.
Note: Aeronite spawns starting Day 7. You can’t surprise Aeronite for more than Good, and if you fail to get it, you should escape the battle.
While there are no specific tactics for this boss, you should be aware that you need to inflict massive damage if you intend to defeat the dragon, and you also have to do it fast, because Aeronite flees. Aeronite can cast Fed Up which is similar to Lightning’s Escape ability.
If this happens, you must search for Aeronite again and restart the battle. Furthermore, you have to stagger the dragon four times.
Note: Equipping items that increase Lightning’s resist to fire, ice, lightning and wind, is essential, without forgetting that you need to inflict high damage using the same spells.
Slow debuff won’t work on Aeronite, but you can try to cast Deprotect, Imperil and Deshell, although they may not stick the first time.
After you stagger Aeronite once, its vulnerabilities to magic and physical attacks will be set to normal, and after you stagger the dragon again, it will become weak against both of them.
If you manage to defeat Aeronite, you will get the item required by Nolan, and he will also drop the Falcon Charm which increases the ATB Recovery by 70. Take the Monster Flesh back to your client to complete the quest.