"Final Fantasy XV" has some of the best and most difficult dungeons to finish and one of those is the Costlemark Tower. Aside from the long multi-floored dungeon filled with monsters, it also has some tough bosses, which are the Red Giant and the Jabberwock. Here is how to navigate through the dungeon and the methods on how to defeat the two bosses.
The Costlemark Tower should only be entered by a party of level 55 characters, according to Eurogamer. Players will have to head for Fallgrove and walk east up to the path to find the tower. They will have to make sure that they need to be there in the evening because its doors will not open during the day.
As the players head inside the dungeon, they will get into the first room, which will have some Gelatins that are the stronger versions of the Flans. Head west from that room and follow the path until they find again some more Gelatins and some Galvanades, which they have to be careful with since they have lightning area of effect attacks.
Players should keep following the path until they reach a room with two collapsed balconies. They will have to cross the narrow beam in that room on the left and descend the stairs so that they can get to the next floor.
A couple of long spiral ramps will be in this next room that players will have to descend to and there will be more enemies along the way until they reach the bottom. Go through the exit on the north wall, crawl through the small gap, and then turn left into the corridor. For those who are following the Dino's stone location quest, they will find the Emerald Stone here.
Players will now have to head down the stairs and find a room full of monsters again until they find a long curved ramp. They should follow the path to the bottom until they find a large rectangular room.
Players will find some glowing blocks here and a red switch on the floor, which they should not stand on. Stand on the glowing block in the southwest corner of the room, which will let them descend to a labyrinth down below.
A series of rooms will be before the players and they will be full of enemies that they have to eliminate before they can proceed. Activate the blocks in turn to progress through the maze, and when they reach a room where they have to choose between two paths, head south to face the Red Giant sub-boss. They will have to be careful since it is resistant to almost all weapons except for the Armiger and the Royal weapons.
After emerging victorious from that room, players will find themselves in a circular room where they can heal up and get ready for another fight, according to IGN. When they descend the elevator, they will face the level 58 Jabberwock. They should cripple its legs, which leave it vulnerable, and always dodge when they can because the damage can be painful for the team.
Players should watch out when it raises its one leg in the air since it will slam its leg into the ground for an AoE attack that Noctis might not be able to phase through. Always dodge, chip away at its health, and use polearms since it is weak against it. After killing it, they can now recover the Royal Arm.
Check out the "Final Fantasy XV" Side Quest: Costlemark Tower video below: