The Treasure Vault is the sixteenth chapter of Drake's Fortune. Nate and Elena ventured deep into the treasure vault, where they encountered Eddy Raja and his pirate crew and ultimately uncovered the grim truth regarding Sir Francis' fate.
Completing the chapter in less than 7 minutes in Drake's Fortune Remastered will unlock the gold trophy "A Speedy Reunion".
Story[]
Nate and Elena entered the vault, which consisted of a vast labyrinth of walkways and stairs. Nate noticed several Roman numerals engraved into metal plates set into the ground and walls, each accompanied by a directional arrow. By following the numerals scrawled on the corner of Francis Drake's map (II, V, VII), he navigated the complex, catching glimpses of strange humanoid forms moving in the distance.
As they ventured further, Eddy Raja and his pirates blasted through a door at the rear of the vault. Eddy taunted Nate, reminding him that the "last man alive gets the gold," before ordering his men to open fire. Nate and Elena fought their way through the pirate forces, steadily ascending through the vault.
Nate touching Sir Francis' body.
Following a looping flight of wooden stairs, they reached a small chamber at the summit of the vault where they discovered the remains of Sir Francis Drake. Nate realized that his ancestor had never found the treasure, but had instead died in this very spot. Saddened, Nate removed his necklace and placed it beside Drake's body before he and Elena continued their journey.
Walkthrough[]
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Drake's map of the treasure vault, with the Roman numerals.
The treasure vault is a large labyrinth of stairs and platforms. Navigation is dictated by the Roman numerals (II, V, VII) found on the corner of Drake's map, which can be viewed via the on-screen prompt.
Upon entering, locate the "II" plate with an arrow on the floor and follow its direction to jump down to the center of the room. Ascend the stairs to find a "V" plate; follow this path to find handholds and another "V" arrow. Climb up to reach a large lever and tap 
to activate the gears.
Climb the chain that has moved into position to reach a platform. Be wary of the deadly spiked lanterns rocking back and forth ahead. Follow the "II" sign and jump down onto the stairs. At the top, leap across the gap to the left, shimmying along the ledge to bypass the swinging lanterns. Cross the wooden walkway to the right and follow the steps to another "II" arrow. This point serves as a checkpoint.
Nate standing before a set of deadly rocking lanterns.
Continue along the path, timing your movements to avoid the swinging lanterns. Nate will eventually reach a small, unstable wooden platform that will collapse; tap 
immediately to drop down safely. From the landing, head toward the "VII" sign. Dodge the two lanterns and leap across the gaps to reach a large wooden structure. Step inside the elevator to descend. A window above will open—this is the next objective indicated by the "V" sign. Climb the black chain on the wall to the right, head left, and enter the second elevator mechanism to open the gate and lower the bridge for Elena.
Pirate encounter[]
Nate ambushed by his former enemies.
Follow the "II" sign to the left of the hall. You will be ambushed by Eddy's pirates; the rickety fences in this area provide adequate cover. The pirates utilize the 92FS - 9mm, M4, and SAS - 12, making them familiar targets. Eliminate the pirates on the high cliffs first, then those across the gap to the left. As you ascend the small stairs, be cautious of the pirates equipped with M79 grenade launchers on the far left.
Locate the "II" arrow where the grenadiers were stationed, follow it, and jump onto the platform to enter a small room. Exit through the door marked with the "V" arrow. You will be ambushed by another grenadier on the left and a shotgun-wielding pirate behind the staircase on the right. Activate the winch to lower a ladder for Elena, then climb to the wooden walkway. A group of pirates will ambush you from the adjacent stone walkway. After defeating them, continue up the staircase to face two more pirates and a final grenadier. Ascend the stairs to the right of the grenadier to reach "The Heart of the Vault".