Splinter Cell: Blacklist | Insurgent Stronghold | Ghost Mastery | Perfectionist

This is a stealth walkthrough on the hardest difficulty
Tom Clancy's Splinter Cell: Blacklist is the sixth installment in the Tom Clancy's Splinter Cell series of video games published by Ubisoft and developed by Ubisoft Toronto. The game takes place two years after Conviction as Third Echelon is discharged by the president Patricia Caldwell. She decides to form Fourth Echelon after a terrorist attack, labelled Blacklist Zero, and Sam Fisher is appointed as the leader to stop future attacks.
After the previous title, which featured a bigger focus on action, developers promised to bring back gameplay elements of the older games. Thus the players can choose to play in three playstyles: Assault, Ghost and Panther.
It's been two years after the events of Conviction, Third Echelon has been terminated after a failed assassination attempt on the President's life. But when a new terrorist plot known as "The Blacklist" puts America's fate hanging in the balance, Patricia Caldwell, the US President, responds by forming Fourth Echelon, a new special operations & counter-terrorism unit with former Third Echelon agent Sam Fisher as the commander of the unit alongside his ally Anna Grímsdóttir as the unit's tech-ops control officer and second-in command. Added as a new member are Isaac Briggs, former CIA agent and new Fourth Echelon agent and Charlie Cole, 4E's resident hacker and technology officer. Now the unit's new mission: hunt down those responsible for the attack and stop the Blacklist countdown before its too late.