Isle of Sgàil, North Atlantic

The sixth and final mission is the Isle of Sgàil which is a remote island in the North Atlantic where a gathering of the global elite is being hosted by The Ark Society. The Isle of Sgàil is one of the most secretive places in the world. It is rumored to have served as everything from a Roman outpost to a 'black site' prison for Russian spies, the island is a mystery to virtually everyone.

Your objective in 'The Ark Society' mission is to eliminate Zoe and Sophia Washington who have made their ascension to the top of this elite secret society thanks to their family's money. There is also the optional objective of assisting in the extraction of the Constant - the current leader of Providence.

This mission will rely heavily on disguises as you move through this ancient castle that the Ark Society has converted into their headquarters. There are a number of places as well as events that you can encounter both Zoe or Sophia but your access is limited by the clothes you are wearing as each floor requires a certain status.

Tips to kill Zoe Washington and Sophia Washington

Zoe Washington

• During a ritual she plans to partake in that will involve setting an effigy on fire with her inside you can tamper with the trap door that opens below for her to escape.

• During the above mentioned ritual you can fire a cannon at her while she’s inside the effigy.

• Collect 10 commemorative tokens hidden around the castle and present them to Zoe so you get taken to a one-on-one interrogation that features a lie detector and electroshock machine you can use to kill her with.

Sophia Washington

• Disguise yourself as an important council member and during the meeting with her shove her into the iron maiden that is in the room.

• Steal the rare Aztec necklace that is on display in the Gallery of the castle and use it to strangle her.

• When the opportunity arises push her off the edge so she falls into the ocean that surrounds the castle.